Watchlords

The attraction of the vintage tool watch for many is that these were timepieces built to do a specific job as accurately as possible, and, as such, form almost always followed its utilitarian function. Military wristwatches, of course, often took this idea to the extreme, with nothing extraneous added, and nothing essential left out of the design.

During World War II, the British imported Swiss wristwatches and issued them under the A.T.P. moniker (Army Trade Pattern); most of these were 29–33-millimeter chrome or steel-cased watches with white or silver dials, luminous pips or baton indices, running central or sub-seconds, and 15-jewel movements with snap or screw back cases. However, the MoD eventually decided that these watches, which were essentially civilian models with military dials and spec/issue numbers, weren’t cutting it in the field, and they drew up a specification for a new wristwatch designed to fit the particular needs of Her Majesty’s Government—an ideal military watch where, yes, form followed function.

https://wornandwound.com/military-watch ... rty-dozen/

Great watches IMO, just timeless styling and the patina on some is perfect. I would like a Cyma if I could find a decent one at a decent price. 37 mm is too small, but it's still just about wearable.