Junghans J80/3; Junghans 680.72

Caliber Junghans J80/3; Junghans 680.72

sweep second; no shock proof; separate escape-wheel cock


Junghans J80/3; Junghans 680.72; Front


Junghans J80/3; Junghans 680.72; movement


Junghans J80/3; Junghans 680.72; back

  • Type: men´s wristwatch
  • Manufacturer on dial: Junghans
  • Trademarks/imprint: JUNGHANS; Back: J in eight-pointed star; Boden Edelstahl
  • Number of jewels: 17
  • Escapement: lever escapement
  • Balance staff: two-leg screw balance
  • Shock protection: no
  • Particularity: sweep second; separate escape-wheel cock
  • Beats per hour: 18.000 A/h
  • Dimensions of movement: 10.5“‘
  • Time of production: 1932 – to 1940ies
  • Functions: manual winding
  • Display: hour, minute, sweep second
  • Dial: silver, arab. Luminescent; encircling blak printed minute track
  • Hands: Thread with lume
  • Second hand: red with long counterweight
  • Case shape: round
  • Case diameter (mm): 36
  • Case material: Chrome-plated brass
  • Backn: Steel, pressed
  • Strap/bracelet: none

Another example with variation of the gear train bridge


Junghans J80/3; Junghans 680.72; movement


Junghans J80/3; Junghans 680.72; movement

In this watch, the gear train bridge shows a variation. There is a receptacle for an additional spring, presumably to better perform the second wheel. The second wheel is missing and thus also the second hand.

Here is the movement with a singular train bridge: Junghans J80; Junghans 680.72; Zentralsekunde

Separate escape-wheel cock versus one-piece train bridge


Junghans J80/3; Junghans 680.72; separate escape-wheel cock


Junghans J80/3; Junghans 680.72; detail train bridge

Caliber overview


Caliber classification Junghans J80, Junghans J81

Again, I find it difficult in some caliber allocation. With the above list I tried to provide some clarity on the different caliber and their designations.

The movements were produced at the same time with or without divided wheel bridge. There are versions with 7, 11, 13, 15, 16 and 17 jewels.

There's caliber Junghans J80 with various imprints on the bridge: J80S; J80M (was probably Meister).