Junghans J80; Junghans 680.70

Caliber Junghans J80; Junghans 680.70

sub second; no shock protection

Junghans-Meister-3.jpg

Junghans J80; Junghans 680.70; Front; photo/collection: A. Hönlinger, Wien

Junghans-Meister-8.jpg

Junghans J80; Junghans 680.70; movement; photo/collection: A. Hönlinger, Wien

Junghans-Meister-6.jpg

Junghans J80; Junghans 680.70; back; photo/collection: A. Hönlinger, Wien

Junghans-Meister-2.jpg

Junghans J80; Junghans 680.70; Front; photo/collection: A. Hönlinger, Wien

Junghans-Meister-4.jpg

Junghans J80; Junghans 680.70; crown side; photo/collection: A. Hönlinger, Wien

Junghans-Meister-5.jpg

Junghans J80; Junghans 680.70; bracelet; photo/collection: A. Hönlinger, Wien

  • Type: mens wristwatch
  • Manufacturer on dial: Junghans
  • Trademarks/imprint: JUNGHANS; Meister (in fracture scripture) Back: Edelstahl; J and UNGHANS in eight-pointed star
  • Number of jewels: 15
  • Escapement: lever escapement
  • Balance staff: two-legged screw balance
  • Shock protection: no
  • Features: escape wheel cock separat
  • Beats per hour: 18.000 A/h
  • Dimensions: 10.5“‘
  • Production period: 1935 - 1938
  • Functions: hand winding
  • Display: hour, minute, sub second at 6
  • Dial: siver dial with luminous figures (Radium), minute lines (railway); sub second at 6
  • Hands: Lance
  • Second hand: thread with a small counterweight
  • Case form: Form with integrated metal bracelet
  • Case diameter (mm): 265 mm x 36 mm
  • Case material: brass, chromed
  • Back: Steel, pressed
  • Bracelet: Steel, probably not original but typical of the period; Embossing: ATEMPO PATENT and ROSTF . STEEL

Remark

The movement shown is generated in the master version. This had a Nivarox spiral, a steel lever and escape wheel of steel and were regulated more precisely.

With cordial thanks to A. Hönlinger, Vienna, for the wonderful photos of this rare version of a Junghans J80 Master with integrated metal bracelet!

Further example

Junghans-J80-Junghans-680.70-Meister-kleine-Sekunde-separater-Ankerradkloben-001.jpg

Junghans J80; Junghans 680.70; Meister

Junghans-J80-Junghans-680.70-Meister-kleine-Sekunde-separater-Ankerradkloben-003.jpg

Junghans J80; Junghans 680.70; Meister

Junghans-J80-Junghans-680.70-Meister-kleine-Sekunde-separater-Ankerradkloben-002.jpg

Junghans J80; Junghans 680.70; Meister

Caliber overview

Kaliberliste-Junghans-J80-J81-01.jpg

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).