1930s Jaeger chronograph Precise timing mechanisms were important

Precise timing mechanisms were important for the war in things like bomb timers

it has a couple of very small scratches around the 7 o'clock marker

Case diameter (excluding winding crown): 48mm

there’s an excellent introduction to these watches here:

1930s Jaeger chronograph Precise timing mechanisms were importantThis is a beautiful 1930s gentlemans dress chronograph manufactured by the famous firm of Jaeger LeCoultre. The watch is a dress chronograph meaning it wasnt principally designed for the professional timing of events (for example by scientists or pilots), but rather it was an expensive, sophisticated watch for a gentleman to wear to exhibit both his good taste and his affluence. The watch has a gorgeous, unrestored black dial with gilt markings and