Junghans J04
- Kind:
- Timing watch
- Jewels:
- 7/11
- Production:
- 1956 - 1959
- Type:
- Open face
- Variants:
- J04
- Catalog Group:
- 128/4101, 128/4201, 128/4105
128/4110, 128/4210, 128/4115 - Size:
- 18"
- Diameter:
- 39.75mm
- Height:
- 7.4mm
- f:
- 1/5 sec. = 18000 A/h
1/10 sec. = 36000 A/h - Balance staff:
- U1485/U2868/U2371
- Stem:
- W1734
- Mainspring:
- 1.70x14.0x0.16x430mm
- Reference picture:
- Case size:
- Origin:
- 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.
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| 128/4105 | ||
 |  |  |
| 128/4210, pictures courtesy of Alfred Babbe | ||
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| 128/4201 | ||
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Junghans catalog 1956
128/4101
Stop watch, 1/10 seconds, 7 jewels
Start, stop and back to zero by successive pressures on the crown.
4 revolutions per minute, small register up to 15 minutes. To make reading easy, the outside figures from 1 to 30 are black and the inside figures from 31 to 60 are red: read figures of the colour shown by the small hand of the register.
Chromium plated metal case, enamel dial 40 mm (18''')
128/4105
Stop watch, 1/5 seconds, 7 jewels
The second hand starts, stops and returns to zero by successive pressures on the winding crown. The long hand makes one revolution per minute: small register up to 30 minutes.
Chromium plated metal case, enamel dial 40 mm (18''')
128/4110
Industrial Timer, 1/00 minutes, 7 jewels
Start, stop and back to zero by successive pressures on the crown. The seconds hand makes one revolution per minute: small register up to 30 minutes.
Chromium plated metal case, enamel dial 40 mm (18''')
128/4115
Industrial Timer, 1/5 seconds and 1/100 minutes, 7 jewels
Start, stop and back to zero by successive pressures on the crown. The seconds hand makes one revolution per minute: small register up to 30 minutes.
Chromium plated metal case, enamel dial 40 mm (18''')
128/4201
Stop watch, 1/10 seconds with side push-piece, 7 jewels
Start and stop by pressing the winding crown, timing out, pressing the push-piece returns hands to zero. 2 revolutions per minute, small register up to 15 minutes. To make reading easy, the outside figures from 1 to 30 are black and the inside figures from 31 to 60 are red: read figures of the colour shown by the small hand of the register
Chromium plated metal case, enamel dial 40 mm (18''')
128/4210
Industrial Timer, 1/100 minutes with side push-piece, 7 jewels
Start and stop by pressing the winding crown, timing out, pressing the push-piece returns hands to zero. The second hand makes one revolution per minute: small
register up to 30 minutes
Chromium plated metal case, enamel dial 40 mm (18''')