Hi All I’m selling my Sinn 103 SA HD from the era when Helmut Sinn owned and managed the company, during his time watches were produced in fairly small batches. So what do all the numbers and letter designations after 103 mean - SA means it has a Sapphire Crystal and HD means it’s Handwound. Because there’s no auto rotor there’s a much slimmer case profile, about as thick as a Speedmaster- so it fits beautifully (see photos side by side with a Speedmaster). This one has great Patina - the Tritium has aged to a lovely even Creme Brûlée colour which gives it a great Vintage quality despite the Watch only being circa 30 years old.......and as for that Seconds Chrono Hand - I love the big arrow filled with Tritium, one of the main reasons I bought it. Details Case - good condition, with a sapphire case back, signed screw down crown and screw down pushers Lugs- 20mm Case Diameter- 41mm Movement- Valjoux 7760 Handwound Crystal - Sapphire Bezel- Dive Type Day/Date Wheel - German Buckle - original Sinn buckle Service History - last serviced August 2016 - all functions work well Some photos Please let me know if you have any questions. Michele’s fantastic site is a good learning resource. https://vintage-sinn-collector.de/sinn103.html Some OF references https://omegaforums.net/threads/nathan1967-greatguy.68211/https://omegaforums.net/threads/nathan1967-perfect-and-friendly-buyer.67672/ https://omegaforums.net/threads/nathan1967-is-a-good-seller.65645/ https://omegaforums.net/threads/nathan1967-is-an-incredible-seller.76157/ https://omegaforums.net/threads/great-transaction-with-nathan1967.75553 Please DM me if I’ve not described anything correctly- much appreciated. Price - £2350 net to me. I’m based in the U.K.. I normally use Royal Mail Tracked and Signed For with ParcelPro insurance but happy to discuss arrangements to suit you. Thanks for looking! Nathan