I’ve owned this watch for about three years and recently offered it to a member who expressed interest in the model following Ash’s great write up on this ultra-thin Constellation line: https://stories.omegaforums.net/the-constellation-cal-712-ultra-thin-167-021-chronometer/ The watch is in really nice condition overall with light signs of wear. Nice and clean dial with two tone, black and gold hour markers. Omega signed crown and crystal. Super thin design at approximately 7.5mm thick, 33mm wide not including the crown, and 19mm between the lugs. Service history is unknown but the watch is keeping time (approx. 30-45s deviation over 24 hours). SN: 23,xxx,xxx - dates the watch to approx. 1966/7 Price: $700 USD (net) watch head only, or $750 with new brown TUNS strap that’s pictured. Shipping from Canada is extra, cost tbd with buyer depending on location. Straight sale preferred - would consider trading up for a gold 167.021 with a gold starburst dial. References: https://omegaforums.net/search/15236498/?q=Vanallard&o=date&c[node]=10