{"product_id":"1948-longines-tank-case-17-jewels-cal-23z-swiss-26mm-swiss-wristwatch-10k-g-f","title":"1948 Longines Tank Case 17 Jewels Cal. 23Z Swiss 26mm Swiss Wristwatch 10K G.F.","description":"\u003ch2\u003eWatch Overview\u003c\/h2\u003e\n\n\u003cp\u003eOffered here is a vintage Longines tank-style mechanical wristwatch, dating to approximately 1948 based on the movement serial number.\u003c\/p\u003e\n\n\u003cp\u003eThis is a manual-wind timepiece powered by the original Longines mechanical movement, caliber 23Z, featuring 17 jewels and a sub-seconds hand. This Swiss-made watch operates at a frequency of 18,000 vibrations per hour and offers an approximate power reserve of 44 hours. \u003cstrong\u003eSERVICED ON 12\/2025\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe watch features a champagne dial that has developed an attractive vintage patina over time. It is accented by applied Arabic numerals, hour markers, a minute track, and matching hands. The sub-seconds register is positioned at 6 o’clock.\u003c\/p\u003e\n\n\u003cp\u003eIt is housed in a 26mm square case with lugs design, crafted in 10K yellow gold filled with the original signed crown. The watch is fitted with a brand-new brown two-piece leather strap, complementing its classic and elegant design.\u003c\/p\u003e\n\n\u003cp\u003eFully inspected and authenticated, this timepiece remains in very good vintage condition, showing signs of wear consistent with age. It is running properly and ready to wear and enjoy.\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 Longines\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Wristwatch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eYear \/ Era:\u003c\/strong\u003e 1948 - 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 Champagne\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Arabic numerals, minute track, sub-seconds register\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-wind\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e Longines 23Z\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eJewels:\u003c\/strong\u003e 17\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-second hand\u003c\/li\u003e  \n\t  \u003cli\u003e\u003cstrong\u003eSERVICED ON 12\/2025\u003c\/strong\u003e\u003c\/li\u003e  \n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Reserve:\u003c\/strong\u003e Approx. 44 hours\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e 18,000 vph\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 10K yellow gold filled\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCase Shape:\u003c\/strong\u003e Square \/ Tank\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, push-pull\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWater Resistance:\u003c\/strong\u003e -\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBand Type:\u003c\/strong\u003e Brown leather strap\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCase Back Markings:\u003c\/strong\u003e Longines -Wittnauer Watch Co. INC. Geneva Montreal 10K Gold Filled\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 26.3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCase Diameter w\/Crown:\u003c\/strong\u003e 28.1\u003c\/li\u003e \n  \u003cli\u003e\n\u003cstrong\u003eCase Lug to Lug:\u003c\/strong\u003e 40.8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCase Thickness:\u003c\/strong\u003e 10.6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLug Width:\u003c\/strong\u003e 16\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBand Width:\u003c\/strong\u003e 16\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAdditional Info\u003c\/h2\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 The watch is in good condition, showing signs of wear consistent with age and use\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExtras:\u003c\/strong\u003e This timepiece has been fully inspected and authenticated by our in-house watchmaker, confirming that it runs accurately.\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-2185\u003c\/p\u003e\n","brand":"Longines","offers":[{"title":"Default Title","offer_id":47274098688194,"sku":"WA-2185","price":475.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0577\/7027\/9106\/files\/DSC6960.jpg?v=1776269653","url":"https:\/\/secondhandhorology.com\/en-nl\/products\/1948-longines-tank-case-17-jewels-cal-23z-swiss-26mm-swiss-wristwatch-10k-g-f","provider":"SECOND HAND HOROLOGY","version":"1.0","type":"link"}