The 8820T was Sinn’s first full titanium watch and features a capillary depth gauge. Fairly rare and I don’t recall seeing any with this dial layout in the past. The case is 39mm side-to-side, 43mm from lug-to-lug and 11mm thick. Very lightweight (thanks titanium ) NSA bracelet with spring loaded clasp that expands and contracts to eliminate the need for micro adjustments. small dot of lume missing on the minute hand. Service history unknown but runs great. Wouldn’t dive without getting pressure test though great write up by Jaspers below: https://omegaforums.net/threads/doc...nns-first-titanium-watch.105146/#post-1376588 $1925 Free shipping in the US. Overseas to be discussed with buyer Flexible payments options (Zelle, Venmo, PayPal, wire, crypto, gold coins, back-scratch coupons