Junghans Luftwaffe aircraft clock J30 BZ, circa 1940
Aluminum and iron, movement marked, manual winding, black dial with Arabic numerals, precision aircraft clock for Luftwaffe planes of the German Wehrmacht, rotating bezel for flight time setting, clock cover with rotating bayonet closure, age-appropriate good condition with signs of use, clock glass replaced, bezel cracked at 60 seconds, clock is running, 29 x 61 x 78 x 57 mm (H x W x L x D).
The Junghans J30 BZ was installed in German military aircraft during World War II and served for precise timekeeping. It was especially valued for its reliability and robustness. These clocks were used in combat and fighter planes, such as the Messerschmitt Bf 109.