{"product_id":"vintage-wittnauer-professional-chronograph-watch-valjoux-72-36mm-s-s-swiss-made-wristwatch","title":"Vintage Wittnauer Professional Chronograph Watch Valjoux 72 36mm S.S. Swiss Made Wristwatch","description":"\u003ch2\u003eWatch Overview\u003c\/h2\u003e \n\n\u003cp\u003eOffered here is an interesting vintage Wittnauer Professional Chronograph, reference 235T \/ 6002\/5, dating to the 1960s. The 235T is notable for its connection to NASA's early wristwatch qualification program during the Gemini and Apollo era.\u003c\/p\u003e\n\n\u003cp\u003eDuring this period, NASA evaluated chronographs for use by astronauts as the American space program progressed toward the Apollo lunar missions. Project Gemini served as an important bridge between Mercury and Apollo, developing and testing many of the techniques and procedures that would later be required for the Moon missions.\u003c\/p\u003e\n\n\u003cp\u003eFor many years, the Wittnauer reference 242T was believed to have been the model submitted by Longines-Wittnauer for NASA's wristwatch qualification trials. Later research into NASA documentation identified the 235T as the model actually submitted for testing. It was evaluated alongside chronographs from Omega and Rolex, with the Omega Speedmaster ultimately passing NASA's qualification tests.\u003c\/p\u003e\n\n\u003cp\u003eThis manual-wind wristwatch is powered by the Valjoux 72 mechanical chronograph movement with 17 jewels. It features central chronograph seconds, a 30-minute counter at 3 o’clock, a 12-hour counter at 6 o’clock, and small seconds at 9 o’clock. The movement operates at 18,000 vibrations per hour and offers an approximate 48-hour power reserve. Swiss made.\u003c\/p\u003e\n\n\u003cp\u003eHoused in a 36mm round stainless steel case with a smooth fixed bezel and classic round chronograph pushers.\u003c\/p\u003e\n\n\u003cp\u003eThe silver-tone dial features applied Arabic numeral hour markers, matching hands, and a classic three-register chronograph layout. The outer portion of the dial features contrasting blue and red scales, including a tachymeter scale marked “Base 1000” and a red telemeter scale marked “Base 10 Miles.” The watch is fitted with a stainless steel bracelet.\u003c\/p\u003e\n\n\u003cp\u003eThis timepiece 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 Wittnauer\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 Professional Chronograph\u003c\/li\u003e \n  \u003cli\u003e\n\u003cstrong\u003eReference:\u003c\/strong\u003e 235T \/ 6002\/5\u003c\/li\u003e \n  \u003cli\u003e\n\u003cstrong\u003eYear \/ Era:\u003c\/strong\u003e 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 Silver-tone\u003c\/li\u003e \n  \u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Applied Arabic numeral, three chronograph sub-dials, outer minute\/seconds track, tachymeter scale, telemeter scale\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 Valjoux 72\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\u003eChronograph\u003c\/li\u003e \n      \u003cli\u003eCentral chronograph seconds\u003c\/li\u003e \n      \u003cli\u003e30-minute counter at 3 o’clock\u003c\/li\u003e \n      \u003cli\u003e12-hour counter at 6 o’clock\u003c\/li\u003e \n      \u003cli\u003eSmall seconds at 9 o’clock\u003c\/li\u003e \n    \u003c\/ul\u003e \n  \u003c\/li\u003e \n  \u003cli\u003e\n\u003cstrong\u003ePower Reserve:\u003c\/strong\u003e Approx. 48 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 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\u003eCrystal:\u003c\/strong\u003e Acrylic\u003c\/li\u003e \n  \u003cli\u003e\n\u003cstrong\u003eBack:\u003c\/strong\u003e Screw-back\u003c\/li\u003e \n  \u003cli\u003e\n\u003cstrong\u003eCrown:\u003c\/strong\u003e Pull\/push\u003c\/li\u003e \n  \u003cli\u003e\n\u003cstrong\u003eBand Type:\u003c\/strong\u003e Stainless steel bracelet\u003c\/li\u003e \n  \u003cli\u003e\n\u003cstrong\u003eCase Back Markings:\u003c\/strong\u003e Stainless Steel\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 36\u003c\/li\u003e \n  \u003cli\u003e\n\u003cstrong\u003eCase Thickness:\u003c\/strong\u003e Approx. 12\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 NO\u003c\/li\u003e \n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Very good vintage condition with signs of age and wear consistent with previous use. 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-7521\u003c\/p\u003e","brand":"Wittnauer","offers":[{"title":"Default Title","offer_id":48867627040962,"sku":"WA-7521","price":2900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0577\/7027\/9106\/files\/DSC1280.jpg?v=1789713873","url":"https:\/\/secondhandhorology.com\/products\/vintage-wittnauer-professional-chronograph-watch-valjoux-72-36mm-s-s-swiss-made-wristwatch","provider":"SECOND HAND HOROLOGY","version":"1.0","type":"link"}