{"product_id":"circa-1960-patek-philippe-calatrava-18k-gold-watch-ref-3410-cal-27-am400-35mm-amagnetic-original-box-strap-buckle","title":"Circa 1960 Patek Philippe Calatrava 18K Gold Watch Ref. 3410 Cal. 27-AM400 35mm Amagnetic - Original Box, Strap \u0026 Buckle","description":"\u003ch2\u003eWatch Overview\u003c\/h2\u003e\n\n\u003cp\u003eWe are pleased to present this vintage Patek Philippe reference 3410, dated from circa 1960. Featuring a 35mm solid 18K yellow gold case, black leather strap with signed 18K gold buckle, and its presentation box.\u003c\/p\u003e\n\n\u003cp\u003eIntroduced in 1959, the reference 3410 is particularly interesting for its use of antimagnetic movements. Early examples were fitted with the caliber 12-AM 400, followed by the caliber 27-AM series beginning around 1960.\u003c\/p\u003e\n\n\u003cp\u003eThis example is powered by the Patek Philippe caliber 27-AM 400, a Swiss manual-wind antimagnetic movement with 18 jewels. The movement is adjusted to heat, cold, isochronism, and five positions, as indicated by its engraved markings. and features hours, minutes, and small seconds.\u003c\/p\u003e\n\n\u003cp\u003eThe silvered dial has applied gold stick hour markers, matching gold hands, an outer minute track, and a subsidiary seconds register at 6 o’clock.\u003c\/p\u003e\n\n\u003cp\u003eThe 35mm round 18K yellow gold case features a smooth bezel, slim lugs, and a snap-on caseback. The inside caseback is signed Patek Philippe \u0026amp; Co. Genève, marked 18K 0.750, and stamped with the Geneva Key No. 1 hallmark identifying Ed. Wenger SA as the case manufacturer.\u003c\/p\u003e\n\n\u003cp\u003eThis example retains its signed black leather strap and signed 18K yellow gold buckle. It has been inspected by our in-house watchmaker and is running and keeping time.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\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 Patek Philippe\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 Calatrava \/ Amagnetic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReference:\u003c\/strong\u003e 3410\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eYear \/ Era:\u003c\/strong\u003e Circa 1960s - 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\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 Silvered\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Applied gold stick hour markers, gold hands, outer minute track, subsidiary seconds\u003c\/li\u003e\n\u003c\/ul\u003e\n\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 Manual-winding\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e Patek Philippe 27-AM 400\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eJewels:\u003c\/strong\u003e 18\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\u003eHours and minutes\u003c\/li\u003e\n      \u003cli\u003eSub-second hand at 6 o’clock\u003c\/li\u003e\n      \u003cli\u003eAntimagnetic construction\u003c\/li\u003e\n      \u003cli\u003eAdjusted to heat, cold, isochronism, and five positions\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\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 Solid 18K yellow gold\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 Snap-on\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCrown:\u003c\/strong\u003e Signed Patek Philippe crown\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBand Type:\u003c\/strong\u003e Original signed black leather strap\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCase Maker:\u003c\/strong\u003e Ed. Wenger SA, Geneva - Key No. 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCase Back Markings:\u003c\/strong\u003e “18K 0.750”, “PATEK PHILIPPE \u0026amp; CO”, “GENEVE”, “SWISS”, “3410”, case no. 2650194, Geneva Key No. 1 hallmark\u003c\/li\u003e\n\u003c\/ul\u003e\n\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 34\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCase Diameter w\/Crown:\u003c\/strong\u003e 36\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCase Lug to Lug:\u003c\/strong\u003e 40\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCase Thickness:\u003c\/strong\u003e 10\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLug Width:\u003c\/strong\u003e 18\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBand Width:\u003c\/strong\u003e 18\u003c\/li\u003e\n\u003c\/ul\u003e\n\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 Original Patek Philippe box - No papers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Good vintage pre-owned condition with visible signs of age and wear consistent with previous use. The dial shows light natural aging. Please refer to the photos for details.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNotes:\u003c\/strong\u003e Inspected by our in-house watchmaker. Running and keeping time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\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\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\n\u003cp\u003eWA-7618\u003c\/p\u003e","brand":"Patek Philippe","offers":[{"title":"Default Title","offer_id":50515957514434,"sku":"WA-7618","price":18000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0577\/7027\/9106\/files\/IMG-20260916-WA0366.jpg?v=1790229772","url":"https:\/\/secondhandhorology.com\/products\/circa-1960-patek-philippe-calatrava-18k-gold-watch-ref-3410-cal-27-am400-35mm-amagnetic-original-box-strap-buckle","provider":"SECOND HAND HOROLOGY","version":"1.0","type":"link"}