Hanhart (Official German WW2 Junkers JU-87 'Stuka' pilot and co pilot equipment) Fliegerchronograph aka aviator chronograph from 1943 according to serial movement number.
The only thing not original is the strap, which is new and brown and originally had to be black.
Presumably found about 15 miles from here from a shot down and crashed Junkers Stuka and(surviving?) pilot......
It was in such a terrible state but we restored it 8/10.(not touching dial/hands!) Running very well, just looking for one spare chrono part.....
Cheers
Robin