Oris 531 / Oris 531 PC

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8 3/4”’ | Manual Wind | Pin Lever | No Second |

Remarks:

  • PC = Protechoc shock protection
  • Rocking bar winding
  • Click on the dial side
  • Listing ID: 251
  • Manufacturer / Brand: Oris
  • Caliber: 531 / 531 PC
  • Size in French Lignes: 8 3/4'''
  • Size range mm largest diameter: 0 - 22 mm
  • Shape: Round
  • Winding: Manual (Crown)
  • Hands Setting: Crown
  • Seconds Hand: None
  • Escapement: Pin Lever
  • Date, Day, Month...: None
  • Jewels: Oris 531: 2 (both on the bridge side), Oris 531 PC: 0 ("capstones" made of plastic)
  • Setting Lever Screw/Pin Position: Left
  • Balance Position: Bottom (120 - 240°)
  • Shock Protection: 531: Oris-specific, 531 PC: Kif Protechoc
  • Beats per hour: 18,000
  • Balance Type: Nickel
  • Power Reserve: Unknown
  • Production Period: Unknown, possibly around 1960?
  • Identification: Barrel bridge marked with OWC and CAL. 531, 531 PC respectively. Manufacturer's data sheet available.
  • External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-60#post-8509143
  • Country: Switzerland
  • Contributor ©: Uhrforum.de member Badener (Andreas Kelz)

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