Hairspring

Hairspring

Hairspring's founder Erik Gustafson and enthusiast Max Braun bring you a meandering weekly-ish roundtable on watches and many other things.

  1. 4 GÜN ÖNCE

    Episode 88: Audemars Piguet Beyond the Royal Oak

    Erik & Max venture into the side of the AP back catalogue far too often forgotten and overlooked: non-RO vintage. From the Clover to the 1533 or Star Wheel Repeaters and restomod Cartier, the depth of value that exists in AP’s posterity is immense. If you’ve ever wondered what the first Tuscan ref is, who A l’Emeraude is, or what a Disco Volante has in common with today’s independents—listen in. Plus an only wrist for a Patek AD.  Links Mentioned:  5516: https://www.hodinkee.com/articles/vintage-audemars-piguet-reference-5516-perpetual-calendar John Shaeffer Collecting Guide: https://www.hodinkee.com/articles/buying-selling-collecting-john-shaeffer-repeaters 25881 Explainer: https://singaporewatchclub.com/blogs/articles/john-shaeffer-ap-s-best-kept-secret 25881 Purple Dial: https://www.sothebys.com/en/buy/auction/2024/fine-watches-7/repetition-minutes-john-schaeffer-reference-25881 Ceramic-Link Bamboo ref. 66192 & 66172: https://apchronicles.audemarspiguet.com/adobe/dynamicmedia/deliver/dm-aid--cd79969e-bfab-495f-8049-3a18d16e361a/ap-chronicles-image.webp https://onlineonly.christies.com/s/watches-online-dubai-edit/audemars-piguet-bamboo-ref-66172ba-gold-diamond-set-quartz-wristwatch-24/165533 5072: https://www.db1983.com/product-page/audemars-piguet-5072st-vzssc-37mm-1955 5503: https://www.hodinkee.com/articles/inside-the-archives-of-audemars-piguet https://www.hodinkee.com/articles/vintage-vacheron-minute-repeater-at-christies (Scroll Down Here) 831: https://www.phillips.com/detail/audemars-piguet/183251?fromSearch=831 Collaboration Work with Cartier: https://www.phillips.com/detail/audemars-piguet/CH080515/233 (Erik was Wrong, Henry is in fact American not English!) https://www.phillips.com/detail/cartier-and-audemars-piguet/221688?fromSearch=audemars%20piguet%20cartier&searchPage=1 1533: https://www.phillips.com/detail/audemars-piguet/90520 https://www.phillips.com/detail/audemars-piguet/122598 25681PT ‘Clover’: https://www.acollectedman.com/products/quantieme-perpetuel-clover-asprey 5661 / ref. 25661 Tuscan: https://amsterdamvintagewatches.com/shop/audemars-piguet-quantieme-perpetuel-tuscan/ 25557: https://apchronicles.audemarspiguet.com/en/asset/140_carousel16_2v2 (Rightmost) https://www.sothebys.com/en/buy/auction/2024/important-watches-part-i/reference-25557ba-a-yellow-gold-perpetual-calendar 5548: https://www.watchbrotherslondon.com/articles/reference-talk-audemars-piguet-quantieme-perpetual-automatique AP Calibre 2003: https://apchronicles.audemarspiguet.com/en/calibre/Calibre-2003 5093BC: https://hairspring.com/blogs/finds/gubelin-signed-5093bc-audemars-piguet-disco-volante A l’Emeraude QP: https://www.phillips.com/detail/audemars-piguet/CH080424/145 (Which Inspired this https://monochrome-watches.com/collectors-series-nopstar83-audemars-piguet-edward-piguet-ultra-thin-skeleton-perpetual-25734or/) 5740: https://hairspring.com/blogs/finds/5740g-patek-philippe-nautilus-perpetual-calendar 6196P: https://www.hodinkee.com/articles/the-patek-philippe-6196p-the-best-calatrava-in-a-generation 5270: https://hairspring.com/products/5270r-perpetual-calendar-chronograph-pink-gold

    57 dk.

  2. 11 ŞUB

    Episode 87: Our Ultimate 3 Watch Collections

    The title says it all here, with one twist. First, Erik & Max guess each other’s ideal 3 watch collections—a reverse grail collection built for each other. Then it’s the actual current 3-watch grail collection, no holds barred. Many watches are discussed, few make the grade. You all asked, many times, here we are. Plus, an Only Wrist for a Houston electrician.  Links Mentioned:  404.032: https://hairspring.com/products/404-032-double-split 6105: https://www.monacolegendauctions.com/auction/exclusive-timepieces-25/lot-272 Early Datejust Reading: https://le-monde-edmond.com/datejust-a-closer-look-at-a-rolex-icon-2/ Clapton 5004R: https://www.phillips.com/detail/PATEK-PHILIPPE/HK080216/1011 2497G: https://www.phillips.com/detail/patek-philippe/160474 345.0809: https://www.omegaspeedymoon.com 403.041 Yellowjacket: https://www.phillips.com/detail/a-lange-sohne/CH080320/240 Black 5004G: https://www.phillips.com/detail/patek-philippe/193506 2915: https://hairspring.com/products/2915-2-omega-speedmaster-steel Pisa: https://www.phillips.com/article/121350662/a-lange-and-sohne-datograph-pisa 414.028: https://www.phillips.com/detail/a-lange-sohne/181134 Bao Dai: https://www.phillips.com/detail/rolex/90349 https://en.wikipedia.org/wiki/Bảo_Đại WMT: https://www.phillips.com/detail/wmt-(watch-experimental-unit)/202955 YG Brass Resonance: https://hairspring.com/products/chronometre-a-resonance-brass-movement-platinum Yosuke & Dufour: https://www.instagram.com/p/DScn5Qaklh4/?utm_source=ig_web_copy_link&igsh=MzRlODBiNWFlZA== RRCCII: https://www.acollectedman.com/pages/rexhep-rexhepi-chronometre-contemporain-two Laurent Ferrier Phillips: https://hairspring.com/products/hommage-ii-for-phillips-steel 5516: https://apchronicles.audemarspiguet.com/en/asset/140_carousel03_05v2 Only Wrist: https://hairspring.com/blogs/finds/5100-rolex-texano https://hairspring.com/blogs/finds/3770-patek-philippe-nautellipse

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  3. 29 OCA

    Episode 86: 3940 and Onwards, The Patek Philippe ‘Pure’ Perpetual Calendar Pt. 2

    It is finally time to dissect and opine on the 3940. Erik & Max break down series with some nuances you may not expect. This includes hallmarks, Singer vs Stern dials, Series breakdown, and thoughts on what truly matters here. And that’s just the first half of the episode, with the second dedicated to covering the vast majority of all major references since and what to pay attention to. It’s the second half Patek Philippe of the ‘pure’ QP bloodline this week.  Links Mentioned:  Zeitwerk Press Photo: https://www.alange-soehne.com/us-en/timepieces/zeitwerk/zeitwerk-honeygold-lumen Technical Review of 240 Q: https://www.41watch.com/en/journal/buyers-guides/technical-review-of-the-mythical-240-caliber-from-patek-philippe First Series 3940: https://www.phillips.com/detail/patek-philippe/191571 Evolution of Just First Series Dials Alone: https://www.watchbrotherslondon.com/articles/the-three-dials-of-1st-series-patek-philippe-ref-3940 Early Second Series 3941: https://hairspring.com/products/3941j-perpetual-calendar-dore-dial-early-second-series-yellow-gold Late Second Series: https://www.phillips.com/detail/patek-philippe/143107 Third Series: https://hairspring.com/collections/exclusives/products/3940p-perpetual-calendar-third-series-platinum Beyer First Series: https://www.phillips.com/detail/patek-philippe/183202 Interesting ‘Syrup’ 24-Hour indicator patina: https://www.watchbrotherslondon.com/sales-corner/p/1992-patek-philippe-perpetual-calendar-3940-platinum-collector-set Roman 3940: https://www.watchprosite.com/patek-philippe/3940g-025-roman-dial-change-to-3940g-013-classic--value-impact/11.1590521.15856176/ 3945 (Soldered Bracelet): https://www.phillips.com/detail/patek-philippe/215848?fromSearch=3945 https://www.christies.com/en/lot/lot-6102706 Saatchi History: https://www.phillips.com/article/144079689/patek-philippe-saatchi-edition-london-2015-grand-exhibition-about 5039: https://hairspring.com/blogs/finds/5039g-patek-philippe-perpetual-calendar 5040: https://hairspring.com/blogs/finds/5040p-patek-philippe-perpetual-calendar 5049P: https://www.watchprosite.com/patek-philippe/latest-addition--ref-5049p/11.1467591.13835786/ 5136: https://www.phillips.com/detail/patek-philippe/195786 5139: https://www.phillips.com/detail/patek-philippe/210732?fromSearch=5139 5050: https://www.phillips.com/detail/patek-philippe/224366?fromSearch=5050 5059: https://collectability.com/product/patek-philippe-officers-case-perpetual-calendar-ref-5059g/ 5140: https://mrwatchley.com/products/patek-philippe-perpetual-calendar-5140g 5940: https://www.hodinkee.com/articles/patek-philippe-5940g 5327: https://www.patek.com/en/collection/grand-complications/5327g-001 5320: https://www.hodinkee.com/articles/patek-philippe-5320g-perpetual-calendar-introducing 5236: https://www.hodinkee.com/articles/patek-philippe-ref-5236p-001-in-line-perpetual-calendar-a-first-for-patek-introducing Pocket Watch 725: https://thekeystone.com/products/patek-philippe-yellow-gold-perpetual-calendar-pocket-watch-725-2 5740: https://hairspring.com/blogs/finds/5740g-patek-philippe-nautilus-perpetual-calendar Only Wrist: https://hairspring.com/products/16018-datejust-birch-wood-dial-yellow-gold https://hairspring.com/products/1655-explorer-ii-steel

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  4. 17 OCA

    Episode 85: Hot Takes & Resolutions

    Are regulator dials ugly? Are Lange a credible threat to Patek’s repeaters? What’s the ideal Bond Villain watch? Why do so many watch professionals seem like they don’t even like watches? Erik & Max put out a call to you for your hot takes and controversial opinions. Some were lukewarm, but many were truly controversial and made for excellent discussion. If hot takes aren’t to your taste, this episode concludes with resolutions in watches for the new year.  Links Mentioned: Roman Numerals Discussed: https://hairspring.com/blogs/finds/19019-rolex-oysterquartz-day-date-1 https://www.phillips.com/detail/patek-philippe/HK080423/880 https://hairspring.com/blogs/finds/brown-guilloche-dial-voutilainen-observatoire-1 5374: https://hairspring.com/blogs/finds/5374p-patek-philippe-minute-repeater-perpetual-calendar RD2: https://www.hodinkee.com/articles/audemars-piguet-rd2-royal-oak-perpetual-calendar-ultra-thin-hands-on 5327G: https://www.patek.com/en/collection/grand-complications/5327g-001 90s IWC: https://www.unpolishedwatches.com/p/heres-why-im-so-into-90s-iwc-right  History of the Calatrava: https://monochrome-watches.com/history-of-the-patek-philippe-calatrava-part-1-reference-96/ Regulator Dial: https://hairspring.com/blogs/finds/laurent-ferrier-micro-rotor-regulateur-ecole 70s Longines: https://www.fratellowatches.com/buying-guide-the-best-longines-watches-from-the-1970s/ 13ZN: https://www.acollectedman.com/blogs/journal/longines-13zn-still-collectible 116500: https://www.hodinkee.com/articles/rolex-daytona-ref-116500ln-review Only Wrist: https://hairspring.com/collections/exclusives/products/ur-210s-full-metal-jacket-steel-titanium https://langepedia.com/a-lange-sohne-tourbillon-pour-le-merite/ https://www.hytwatches.com

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  5. 6 OCA

    Episode 84: A Year in Auctions, with a Market Update

    The year of 2026 is upon us, but it’s worth pausing to look at some of the great and atrocious things which sold. This episode covers a state of the market through a review of the entire year at auctions, noting specific examples. Erik & Max discuss watches that they wish they’d had the funds to buy, opportunities missed, problem watches/things they’d stay away from, value buys, unreasonable results, and our wildcards. Plus, an Only Wrist for the most significant chronographs of all time.  Links Mentioned: Watches We Wish We’d Had the Funds to Buy: https://www.phillips.com/detail/heuer/191665 https://www.phillips.com/detail/philippe-dufour/226566 https://www.phillips.com/detail/rolex/224005 https://www.monacolegendauctions.com/auction/exclusive-timepieces-38/lot-67 https://www.sothebys.com/en/buy/auction/2025/important-watches-2/reference-6538-submariner-big-crown-james-bond-a https://www.phillips.com/detail/voutilainen/223968 https://www.alange-soehne.com/us-en/timepieces/lange-1/little-lange-1/little-lange-1-in-750-white-gold-181-038 https://www.sothebys.com/en/buy/auction/2025/important-watches-3/reference-2438-1-a-yellow-gold-perpetual-calendar Opportunities We Missed: https://www.christies.com/en/lot/lot-6534101 https://www.phillips.com/detail/piaget/224987 https://www.monacolegendauctions.com/auction/exclusive-timepieces-38/lot-70 https://www.christies.com/en/lot/lot-6534094 https://www.phillips.com/detail/patek-philippe/216658 https://www.phillips.com/detail/audemars-piguet/213832 https://www.sothebys.com/en/buy/auction/2025/important-watches-2/reference-ba-145-022-69-speedmaster-gus-grissom-a Problem Watches: https://www.phillips.com/detail/rolex/216213 https://www.monacolegendauctions.com/auction/exclusive-timepieces-36/lot-25 https://www.phillips.com/detail/audemars-piguet/216432 https://www.monacolegendauctions.com/auction/exclusive-timepieces-38/lot-48 https://www.christies.com/en/lot/lot-6558481 https://www.christies.com/en/lot/lot-6567932 https://www.sothebys.com/en/buy/auction/2025/important-watches-part-i-ge2501/reference-6034-a-pink-gold-chronograph-wristwatch https://www.christies.com/en/lot/lot-6567913 https://www.phillips.com/detail/jaeger-le-coultre/225242 Values: https://www.phillips.com/detail/vacheron-constantin/223633 https://www.monacolegendauctions.com/auction/exclusive-timepieces-38/lot-7 https://www.sothebys.com/en/buy/auction/2025/fine-watches-6/reference-3147-carrera-dato-45-a-stainless-steel https://www.sothebys.com/en/buy/auction/2025/important-watches-2/reference-404-032-saxonia-double-split-a-pink-gold https://www.phillips.com/detail/breguet/210819 Unreasonable Numbers: https://www.phillips.com/detail/patek-philippe/224435 https://hairspring.com/products/3941j-perpetual-calendar-dore-dial-early-second-series-yellow-gold https://www.phillips.com/detail/patek-philippe/224804 https://www.sothebys.com/en/buy/auction/2025/important-watches-2/octa-chronograph-ruthenium-a-limited-edition Wildcard: https://www.sothebys.com/en/buy/auction/2025/important-watches-3/reference-3945-dore-a-yellow-gold-perpetual https://www.monacolegendauctions.com/auction/exclusive-timepieces-36/lot-237 https://flightbirds.net/publio-magini-the-sistema-magini/ (History of the Magini Trip) https://www.sothebys.com/en/buy/auction/2025/important-watches-2/reference-6100-dragon-an-exquisite-and-rare-yellow Only Wrist: https://hairspring.com/collections/exclusives/products/5970r-patek-philippe-perpetual-calendar-chronograph-pink-gold https://hairspring.com/collections/exclusives/products/2915-2-omega-speedmaster-steel https://hairspring.com/blogs/finds/saatchi-5070p-patek-philippe-chronograph

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  6. 21.12.2025

    Episode 83: The Balance Cocks of 2025

    Yes, it’s year end. And the only awards show that anyone cares about is back in action. It’s the Balance Cocks second annual outing this week; this show will cover the most beautiful and ugliest watches of the year, the greatest new calibre, the strongest value, the watch which will lose you the most money after buying it, and far more. Then we have the big ones, our favorites and the ‘Absolute Cock-Up of the Year’ Grand Prizes. Plus, an Only Wrist of an oil rig worker who likes dressing to the nines.  Links Mentioned: Most Beautiful Watch Nominations: https://www.hodinkee.com/articles/the-a-lange-and-sohne-odysseus-in-so-much-honeygold https://www.hodinkee.com/articles/mbandfs-special-project-one https://www.hodinkee.com/articles/hands-on-greubel-forsey-hand-made-2 https://www.hodinkee.com/articles/intro-in-depth-roger-smith-ref-6 https://www.hodinkee.com/articles/hands-on-lange-datograph-handwerkskunst The Ugliest Watch Nominations: https://www.hodinkee.com/articles/intro-speedmaster-moonphase-meteorite https://www.hodinkee.com/articles/the-tag-heuer-x-fragment-design-glassbox-carrera-is-a-masterclass-in-collaboration https://www.hodinkee.com/articles/dennison-leans-into-peak-70s-glam-and-design-with-new-ald-dual-time https://www.hodinkee.com/articles/hands-on-fp-journe-chronometre-furtif https://www.hodinkee.com/articles/hands-on-audemars-piguet-rd5 https://www.hodinkee.com/articles/hands-on-breguet-type-xx-chronographe-2075bh The Greatest Calibre Nominations: https://www.hodinkee.com/articles/berneron-unveils-details-of-second-collection-the-quantieme-annuel https://www.hodinkee.com/articles/the-1815-tourbillon-in-platinum-now-with-a-black-grand-feu-enamel-dial https://www.hodinkee.com/articles/introducing-petermann-bedat-1825 https://www.breguet.com/250/en/experimentale-1/ The Greatest Value Nominations: https://www.hodinkee.com/articles/rolexs-new-pastel-oyster-perpetual-dials-a-soothing-evolution-of-color https://www.hodinkee.com/articles/hands-on-a-lange-sohne-1815-34mm https://baltic-watches.com/en/collections/watches https://www.hodinkee.com/articles/hands-on-omega-speedmaster-first-omega-in-space The Greatest Depreciator Nominations: https://www.patek.com/en/collection/twenty4/7340-1r-010 https://www.hodinkee.com/articles/chopard-reveals-its-most-complicated-chiming-watch-to-date-with-the-luc-grand-strike https://www.hodinkee.com/articles/intro-universal-tribute-chronographs https://watchesbysjx.com/2025/07/seiko-credor-goldfeather-tourbillon-gbcf999.html Worst Ad of 2025 Nominations: https://imgur.com/a/yteGrrI (Phillips Horse Thing) https://imgur.com/a/pD9Prfa (Urban Jurgensen) New Independent Entrant Nominations: https://watchesbysjx.com/2025/12/latelier-bernard-owl-duplex.html Brand That Evolved Most Nominations: https://www.berneron.ch The Absolute Cock-Up Nominations: https://www.hodinkee.com/articles/hands-on-audemars-piguet-rd5 https://www.hodinkee.com/articles/hands-on-rolex-land-dweller https://www.hodinkee.com/articles/intro-universal-tribute-chronographs Grand Prize Nominations: https://www.hodinkee.com/articles/the-a-lange-and-sohne-odysseus-in-so-much-honeygold https://www.hodinkee.com/articles/a-lange-and-sohne-brings-back-the-lange-1-daymatic-with-a-honeygold-touch Only Wrist: https://www.phillips.com/detail/vacheron-constantin/87538 https://www.europeanwatch.com/watch/audemars-piguet-vzss-vintage-dress-watch-vzss-rare-18k-yg-manual-62560 https://mimandcroket.com/project/rare-audemars-piguet-cal-13vzss/ https://hairspring.com/blogs/finds/honeycomb-dial-6350-rolex-explorer https://hairspring.com/blogs/finds/1-of-26-london-racing-green-jaeger-lecoultre-reverso-1931

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  7. 09.12.2025

    Episode 82: Q&A (Pt. 7)

    Erik & Max are back to answer your wide-ranging questions in the seventh installment of what is becoming a cornerstone of the podcast. Questions range from a new ‘holy trinity’ we’d select, what neo-vintage references collectors should be paying attention to yet aren’t, Langes on a budget, best Blümlein IWCs, our favored Cartier shapes, and far more.  Links Mentioned: Hajime Asaoka: https://www.phillips.com/detail/hajime-asaoka/194815 Atelier Du Chronometrie: https://www.hodinkee.com/articles/just-because-atelier-de-chronometrie-adc17 Yosuke Sekiguchi: https://hairspring.com/blogs/finds/yosuke-sekiguchi-primvere Frodsham: https://hairspring.com/blogs/finds/charles-frodsham-double-impulse-chronometer-2 Smith: https://hairspring.com/blogs/finds/open-dial-roger-w-smith-series-2 Stephen McDonnell’s Talk: https://www.youtube.com/watch?v=J1xQWripjPI 130: https://hairspring.com/blogs/finds/tiffany-dial-patek-philippe-130-chronograph Dato QP: https://langepedia.com/a-lange-sohne-datograph-guide/datograph-perpetual/ Dato QP Tourbillon: https://hairspring.com/blogs/finds/740-036-a-lange-sohne-datograph-perpetual-tourbillon 5960: https://watchesbysjx.com/2014/12/up-close-with-the-patek-philippe-ref-59601a-chronograph-annual-calendar-in-steel.html 25668PT: https://hairspring.com/products/25668pt-perpetual-calendar-skeleton-platinum 43032: https://hairspring.com/products/43032-perpetual-calendar-skeleton-platinum 25636 RO: https://hairspring.com/blogs/finds/25636ba-audemars-piguet-royal-oak-perpetual-calendar-skeleton 25657 MoP: https://hairspring.com/products/25657or-quantieme-perpetuel-mother-of-pearl-dial-pink-gold Mercator: https://www.phillips.com/article/135703213/vacheron-constantin-mercator-history-guide 25881: https://www.sothebys.com/en/buy/auction/2024/fine-watches-7/repetition-minutes-john-schaeffer-reference-25881 47100: https://hairspring.com/products/47100-chronograph-skeleton-platinum 14802ST: https://apchronicles.audemarspiguet.com/en/model/14802-royal-oak-jubilee Engraved Enamel Primer (We’ll Try To Do One Soon): https://www.unpolishedwatches.com/p/engraved-enamel-why-some-dials-never 2526 Dial Manufacture: https://www.hodinkee.com/articles/patek-philippe-2526-enamel-dial-donze-cadrans Budget Lange: https://mrwatchley.com/products/a-lange-sohne-saxonia-yellow-gold-102-001 1815 Up/Down (Gangreserve, not Gangenreserve, Erik Misspoke): https://hairspring.com/products/221-027-1815-up-down-first-generation-white-gold Just The Greatest Annual Calendar: https://hairspring.com/products/330-039-saxonia-annual-calendar-u-s-boutique-white-gold 4-Digit to Swim: https://hairspring.com/products/5512-submariner-gilt-dial-steel Blumlein IWC: https://hairspring.com/blogs/finds/bundeswehr-3501-iwc-porsche-design-ocean-2000 https://hairspring.com/blogs/finds/3508-iwc-ingenieur-500k-a-m https://hairspring.com/blogs/finds/5240-iwc-portuguese-minute-repeater GPHG: https://hairspring.com/blogs/journal/how-fair-is-the-gphg-a-closer-look-at-the-oscars-of-watchmaking Font: https://hairspring.com/blogs/finds/highly-tropical-longines-legend-diver-7150 https://hairspring.com/products/3970ep-second-series-perpetual-calendar-chronograph-platinum_42658 Parmigiani 2840: https://hairspring.com/products/2840-toric-tourbillon-platinum 3670A: https://www.phillips.com/detail/patek-philippe/209429 3651J: https://www.christies.com/en/lot/lot-6235789 Voutilainen Zenith: https://hairspring.com/blogs/finds/zenith-x-voutilainen-x-phillips-calibre-135-o Cartier: https://www.phillips.com/detail/cartier/207628 https://hairspring.com/collections/exclusives/products/tortue-monopoussoir-prive-platinum https://hairspring.com/blogs/finds/2610e-cartier-cpcp-tortue-minute-repeater Only Wrist: https://collectability.com/learn/collectability-in-depth-patek-philippe-perpetual-calendar-ref-3940/ https://apchronicles.audemarspiguet.com/en/model/royal-oak-25686

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  8. 25.11.2025

    Episode 81: The Patek Philippe ‘Pure’ Perpetual Calendar (Beginnings until 3940)

    A monumental occasion, this episode covers a complete chronology of the Patek Philippe ‘pure’ perpetual calendar. Arguably, the QP was the complication that built the Patek Philippe name more than any other through the mid-century. Yet, the main bloodline of QP has many nuances that aren’t often covered. This episode highlights all the main references you might expect and their significant points such as 1526, 2497/2438, 3448, and 3450. But if you’ve ever wondered about the 96 QP, 1527, 1591, 3449, or any of the oddball piece uniques, they’re all in here too. We couldn’t wait for leap year to release this, hopefully you’ll forgive us. 3940 and on will be in an upcoming part two.  Links Mentioned: Thomas Mudge Perpetual Calendar: https://www.sothebys.com/en/auctions/ecatalogue/2016/john-harrison-enduring-discovery-l16055/lot.28.html 97975: https://revolutionwatch.com/1925-patek-97975-the-worlds-first-perpetual-calendar-wristwatch/ 96 QP: https://catalog.antiquorum.swiss/en/lots/patek-philippe-ref-ref-96-lot-31-79 Imperial 96 Calendar: https://www.hodinkee.com/articles/a-rare-complicated-patek-calatrava-you-might-not-have-known-about-is-coming-up-for-auction 1526: https://hairspring.com/blogs/finds/casa-masson-dial-1526-patek-philippe-perpetual-calendar-pink-gold Coca Cola Watch: https://www.hodinkee.com/articles/the-patek-philippe-owned-by-the-founder-of-coca-cola-and-other-ultra-cool-pateks-now-on-exhibit-at-t Briggs Cunningham Steel: https://www.christies.com/en/lot/lot-5065258 Magnifying Glass: https://hairspring.com/blogs/finds/casa-masson-dial-1526-patek-philippe-perpetual-calendar-pink-gold Casemaker Keys: https://collectability.com/learn/the-key-to-master-case-makers-for-patek-philippe/ 1527: https://www.christies.com/en/lot/lot-5309213 https://www.ablogtowatch.com/wp-content/uploads/2013/12/Patek-Philippe-Rare-1527-Perpetual-Calendar-18k-Rose-Gold.jpg 1591: https://le-monde-edmond.com/patek-1591-first-waterproof-perpetual-calendar/ https://www.christies.com/lot/lot-patek-philippe-an-extremely-important-and-unique-4982796/? 2497 & 2438: https://www.hodinkee.com/articles/in-depth-patek-philippe-reference-2497-part-1 https://www.hodinkee.com/articles/in-depth-patek-philippe-reference-2497-part-2 2438: https://www.phillips.com/detail/patek-philippe/91327 3449: https://www.christies.com/en/lot/lot-5493418 3448: https://revolutionwatch.com/padellone-patek-philippes-most-elegant-perpetual-calendar-the-3448/ Senza Luna: https://www.hodinkee.com/articles/patek-philippe-reference-3448-senza-luna-in-depth Unique 3448: https://www.sothebys.com/en/auctions/ecatalogue/2008/important-watches-ge0804/lot.214.html 3450: https://www.phillips.com/detail/patek-philippe/180883 Only Watch: 570G: https://hairspring.com/products/570g-calatrava-white-gold 565 Crown: https://www.phillips.com/detail/patek-philippe/213980 2526: https://hairspring.com/blogs/finds/first-series-2526-patek-philippe-calatrava 5040: https://hairspring.com/blogs/finds/5040p-patek-philippe-perpetual-calendar

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Hairspring's founder Erik Gustafson and enthusiast Max Braun bring you a meandering weekly-ish roundtable on watches and many other things.

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