Junghans J04, updated 10.04.2021
Junghans
Timing watch
7/11
1956 - 1959
Open face
J04
128/4101, 128/4201, 128/4105
128/4110, 128/4210, 128/4115
18'''
39.75mm
7.4mm
1/5 sec. = 18000 A/h
1/10 sec. = 36000 A/h
U1485/U2868/U2371
W1734
1.70x14.0x0.16x430mm
Leonidas 943, AS 943, Heuer 943
The Junghans timing watch with J.04 movement is actually an Leonidas 943 movement, also known as AS 943 or Heuer 943. These timing watches are only mentioned in a Junghans catalog from 1956 and in the Furnituren catalog from 1957. There is a version with 11 jewels where the dial has all the information printed on, inclueding the year 1959. See below. Investigation is ongoing.
Kind:
Jewels:
Production:
Type:
Variants:
Catalog Group:
Size:
Diameter:
Height:
f:
Balance staff:
Stem:
Mainspring:
Reference picture:
Case size:
Origin:
-
-
128/4105
128/4210, pictures courtesy of Alfred Babbe
128/4201
