This blue dialed Navigator uses a bi-compax Tissot 872 - a renamed Lemania 1277 that also served as a rarely used Omega 860 (used in only one and only one DeVille model). This calibre was a bit of a rarity, built for one year in 1969 as the Lemania 1277, then from 1970 living on as the Tissot 872 and Omega 860, running for only a few short years before being discontinued. Some info gleaned from the net shows the movement to be an interesting one: ”compared to the (Omega) 861 and the 321 the 1277 feels like the Missing Link (or perhaps the Piltdown Man!): towards the bottom of the movement we see a balance bridge which is almost identical to the bridge on the 321 and yet the balance underneath it is smooth as in the 1861. The signature arched bridge of the 321 is identical in the 1277 and yet, allowing one's eye to travel up to where you would expect to see a colum wheel, there is clearly a cam arrangement as in the 861. I was expecting the movement to be closely related to the 321 but I wasn't expecting it to be such an interesting mixture of 321 and 861. The late sixties was obviously a busy year at Lemania!” Probably why Omega named it the 860... one less register than the 861. So the watch that captured my interest was a 40mm bi-compax Navigator with a dark navy blue dial that is simply to die for. The handset (original to the watch) is one that was clearly shared with the Omega Speedmaster MkII (racing dial version), which makes sense, but is also more appealing on a Lemania than the broad, flat, square ended hands so common in the seventies. The case is a classic seventies cushion style, similar to one used in a couple of Lemania powered Seamasters of the day. Album: https://albums.memento.com/up58452 Date: https://albums.memento.com/drop31204 $785 NET, OBO; delivery included