Very rare Hanhart KM Kriegsmarine Chronograph of the German Navy, Cal. 40, II World War

A rare single button chronograph of the German Navy
manufactured for U-boat captains and Navy pilots
KM
Hanhart
caliber 40
with telemetre scale
Second World War
Special: dial condition, remain very well preserved

Details on the watch:
Dial
black
Arabic numerals
outer five-minute divisions
telemetre scale
30 min. counter
auxiliary seconds at "9"
skeleton hands
signed
good condition with age traces of use

Movement
caliber 40
nickel-plated
17 jewels
finely ground chronograph steel parts
ratchet wheel
screw balance
incabloc shock protection
The movement was professionally recently overhauled, it is fully functional and is in a very good technical condition.

Case
nickel-plated case
numbered steel screw back with with corresponding markings
reeded turnable bezel
diameter approx. 40mm without crown and lugs
round chronograph pushers
good condition with age traces of use
The watch is fully functional and is in a good, collectible total condition.