My first purchase of 1915 just arrived from France:
A nameless dial, but very clean - as is the back.
Inside the case:
The old FB and London import marks for 1915.
The movement - which sets nicely runs and (albeit somewhat fast) - looks to me to be from the FEF 70 series bidfun-db Archive: Watch Movements : FEF 70
Edit. This was wrong - seems its a FHF 2. See Sparcster's post following.
The listing did not contain the usual words of 'Borgel' or trench, but rather "Très ancienne montre bracelet mécanique anglaise - Argent massif". Argent massif translates as 'solid silver' btw.
Nonetheless it cost me £123.
A strap is now on order, but I might send it for service first anyways. One of my earliest wristwatches.