{"product_id":"1940s-rolex-oyster-perpetual-bubbleback-automatic-chronometer","title":"1936 Rolex Bubble Back Oyster Perpetual Chronometer Watch Diamond Dial Wristwatch","description":"\u003ch2\u003eWatch Overview\u003c\/h2\u003e\n\u003cp\u003eOffered here is an exceptional and historically important Rolex Oyster Perpetual “Bubbleback” automatic chronometer wristwatch dating to 1936 — one of the earliest self-winding waterproof wristwatches produced by Rolex.\u003c\/p\u003e\n\u003cp\u003eThis model belongs to Rolex’s pioneering Bubble Back series, celebrated for introducing the first successful automatic rotor wristwatch combined with the patented Oyster waterproof case. These watches laid the foundation for every modern Rolex automatic that followed.\u003c\/p\u003e\n\u003cp\u003eThe champagne dial features vintage elegant diamond-set hour markers, as shown, along with printed hour indexes, a railroad minute track, blued steel hands, and a small seconds sub-dial at 6 o’clock. The dial is signed “Rolex Oyster Perpetual” and “Chronometer.”\u003c\/p\u003e\n\u003cp\u003ePowering the watch is Rolex’s original in-house “Bubbleback” Perpetual automatic movement, equipped with the patented rotor system and engraved: “Rolex Auto Rotor – Swiss Made – Patented – Super Balance.” This early chronometer-grade caliber represents a significant milestone in Rolex’s self-winding technology.\u003c\/p\u003e\n\u003cp\u003eHoused in a 32mm stainless steel Rolex Oyster waterproof case with a smooth fixed gold-tone bezel and screw-down crown. It is coming on a black leather two-piece strap with a Rolex signed buckle. The case back retains full patent engravings inside, confirming Rolex manufacture from the early automatic era.\u003c\/p\u003e\n\u003cp\u003eThe Rolex Bubble Back was the world’s first widely successful automatic waterproof wristwatch and remains one of the most important milestones in horological history. These early Perpetual models directly led to later icons such as the Datejust, Submariner, and the modern Rolex automatic collection.\u003c\/p\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003ch3\u003eGeneral Specifications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 12px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rolex\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Wristwatch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Oyster Perpetual\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYear \/ Era:\u003c\/strong\u003e 1936 - Vintage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGender:\u003c\/strong\u003e Men's\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Manufacture:\u003c\/strong\u003e Switzerland\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDial \u0026amp; Display\u003c\/h3\u003e\n\u003cul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 12px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e Analog\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Champagne\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Diamond-set hour markers, small-second\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMovement\u003c\/h3\u003e\n\u003cul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 12px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Self-winding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMovement Functions:\u003c\/strong\u003e\n\u003cul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 8px;\"\u003e\n\u003cli\u003eSub-seconds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCase \u0026amp; Band\u003c\/h3\u003e\n\u003cul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 12px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase Shape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBezel:\u003c\/strong\u003e Fixed, smooth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack:\u003c\/strong\u003e Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrown:\u003c\/strong\u003e Screw-down\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrystal:\u003c\/strong\u003e Acrylic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBand: \u003c\/strong\u003eBlack leather two-piece strap, signed buckle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase Back Markings: \u003c\/strong\u003eOYSTER WATCH CO. GENEVA SWISS Great Britain Swiss French U.S.A. Patents 40377 3132\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCase Measurements (mm)\u003c\/h3\u003e\n\u003cul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 12px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase Size:\u003c\/strong\u003e 32\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase Diameter w\/Crown:\u003c\/strong\u003e 35.3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase Thickness:\u003c\/strong\u003e 13.4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLug Width:\u003c\/strong\u003e 17.4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBand Width:\u003c\/strong\u003e 18\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdditional Info\u003c\/h3\u003e\n\u003cul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 12px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eBox \u0026amp; Papers:\u003c\/strong\u003e NO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e It is in good overall condition, showing light to moderate signs of wear consistent with age and careful use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtras:\u003c\/strong\u003e Fully inspected and authenticated by our in-house watchmaker, confirming accurate timekeeping. It is ready to wear.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout Second Hand Horology\u003c\/h2\u003e\n\u003cp\u003eAt SECOND HAND HOROLOGY, we offer a curated selection of watches ranging from vintage to modern, including both brand-new and pre-owned timepieces. We’re committed to quality, accuracy, and integrity. Our listings feature:\u003c\/p\u003e\n\u003cp\u003eProfessional, unedited photography and clear, transparent descriptions. Every watch is thoroughly inspected and securely packaged to ensure a confident, seamless buying experience.\u003c\/p\u003e\n\u003cp\u003eWe also warmly invite you to visit our physical shop and explore the collection in person.\u003c\/p\u003e\n\u003ch2\u003eContact Us\u003c\/h2\u003e\n\u003cp\u003eWe appreciate you checking out our listing! Don’t hesitate to reach out with questions, offers, or just to talk watches — we love what we do and enjoy connecting with fellow enthusiasts.\u003c\/p\u003e\n\u003cp\u003eThank you for your business—we truly appreciate your support and look forward to serving you again in the future!\u003c\/p\u003e\n\u003cp\u003eWA-6552\u003c\/p\u003e","brand":"Rolex","offers":[{"title":"Default Title","offer_id":46666910597314,"sku":"WA-6552","price":4800.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0577\/7027\/9106\/files\/20260207_133359_1_..jpg?v=1770911688","url":"https:\/\/secondhandhorology.com\/products\/1940s-rolex-oyster-perpetual-bubbleback-automatic-chronometer","provider":"SECOND HAND HOROLOGY","version":"1.0","type":"link"}