Ricoh 48
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12 3/4”’ | Automatic | Swiss Lever | Sweeping Seconds | Date |
Remarks:
- Automatic with bidirectional winding, manual winding possible
- Sweeping seconds without hacking
- Date quick setting by changing 21 – 24h
- Rotor with ball bearings
- Part of a very large family “Ricoh 30” of movements -> see external link 2 below!
- Listing ID: 2181
- Manufacturer / Brand: Ricoh
- Caliber: 48
- Size in French Lignes: 12 3/4''
- Size range mm largest diameter: 22 - 31 mm
- Shape: Round
- Winding: Automatic
- Hands Setting: Crown
- Seconds Hand: Sweeping seconds (central seconds)
- Escapement: Lever (Swiss, English, Glashütte)
- Date, Day, Month...: Date
- Jewels: 21
- Setting Lever Screw/Pin Position: Left
- Balance Position: Left (240 - 360°)
- Shock Protection: Monorex
- Beats per hour: 18,000
- Balance Type: Gold-plated nickel?
- Power Reserve: Approx. 38 hours
- Production Period: From approx. 1970
- Country: Japan
- Identification: The reference number on the case back starts with 48. There are only two movements in the Ricoh 30 family (see notes above) that do not have a day indicator.
- Contributor ©: Uhrforum.de member Badener (Andreas Kelz)
- External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-41#post-5292946
- External Link 2: https://watch-movements.eu/blog/en/2019/12/02/ricoh-automatic-watch-movements/
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