Junghans J90 one (1) Jewel

Caliber Junghans J90

Version with one Jewel

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Junghans J90; one Jewel; Front

Junghans-J90-003.jpg

Junghans J90; one Jewel; movement

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Junghans J90; one Jewel; back

  • Type: men´s wristwatch
  • Manufacturer on dial: Junghans
  • Trademarks/imprint: J in eight-pointed star; Back:
  • Number of jewels: 1
  • Escapement: cylinder escapement
  • Balance staff: antimagnetic flat spiral , three-legged ring balance
  • Shock protection: ohne
  • Particularity: bridge movement
  • Beats per hour: 18.000 A/h
  • Dimensions of movement: 11´´´
  • Time of production: 1932 – 1937
  • Functions: manual winding
  • Display: hour, minute, sub second at 6
  • Dial: Silver; golden, arab. Numbers (1 - 12, no 6); circulating interrupted railway minute lines with 24-hour digits; inside offset black printed rectangle; small second with second-lines at 6
  • Hands: arrow; originally blued
  • Secondhand: thread with counterweight
  • Case shape: tonneau, with lateral bulge
  • Case diameter (mm): 30 x 26
  • Case material: Brass, chromed or nickeld
  • Back: Brass, chromed or nickeld

Remark

The caliber Junghans J90 and J91 are the only built by Junghans watch movements with cylinder escapement. At that time it was thought that many watchmaker comes cope more easily with a simple cylinder escapement.

The shown watch on this page is the version with 1 Rubin. Click here for the version with six stones: Junghans J90 six (6) Jewels