This is a rare and desirable Royal Navy issued single-button Lemania chronograph. These watches were first ordered by the Navy for pilots and navigators in the late 1940s and Lemania continued supplying them until the early 1960s. The watch evolved over the years, but this watch is part of the first style (there was a later modification to the caseback and also later the case was changed to an asymmetric style).

The single button operates the chronograph (stop-watch function) - the button in turn starts, stops and resets the chronograph. There is an elapsed minute counter, which allows for timing intervals up to 30 minutes.

The condition of both the dial and movement is very good. The size at 39mm is large for a 1950s watch, but well suited to contemporary tastes. The case is all stainless steel and is in very good order.

The caseback has the original military markings: HS /|\ 9 stands for Hydrographic Service, so for Naval issue the /|\ is called the broad arrow and denotes crown property, 9 is the stores code for a chronograph wristwatch. This original number is crossed out and the later NATO stores reference number is engraved (the 0552 number).

The chronograph functions perfectly and watch is keeping time. It is supplied with a NATO vintage leather strap .

Case diameter (excluding winding crown): 39mm
Case material: stainless steel
Strap width: 20mm
Movement: 15CHT

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