Tissot Seastar Lemania in stainless steel manually wound chronograph with register, tachymeter and a characterful dial from 1969.

The black dial has a semi-matt finish and white contrasting subsidiary dials for constant or subsidiary seconds to the left and, to the right, the chronograph’s minute register.

Calibrated for 30 minutes, the right hand counter has its first five minute division highlighted in blue. This was a popular form of calibration on Yachting chronographs to help delineate the five minute period after the starting gun is fired during regattas, before a second gun is fired exactly five minutes later to indicate the moment a boat may cross the starting line.

The case is made from a single piece of stainless steel which curves downwards towards the lugs to accommodate the flat black tachymeter bezel, the bezel itself is slightly recessed around the 9 o’clock and 3 o’clock positions whilst being slightly raised as it crosses between the lugs.

It is powered by Lemania’s calibre 1277 with Tissot’s relationship with the brand stretching back to 1932 when the specialist chronograph manufacturer joined the SSIH which Tissot had joined two years previously. Lemania supplied chornograph calibres to a variety of Swiss makers including Patek Philippe, Vacheron Constantin, Audemars Piguet and Omega.

The watch is as seen in photos and has been fully inspected and serviced by a professional watchmaker specialising in vintage pieces.