PRIM 66
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11 1/2”’ | Hand Wind | Swiss Lever | Sweeping Seconds |
Remarks:
- Over the course of time, the caliber 66 was built in various 66.x variants, which differ in some design features (see extra picture)
- According to a personal e-mail from PRIM, the caliber 66.2 never went into production. They were supposed to have a riveted balance instead of the pressed one
- The movement shown here has a 3-arm balance wheel instead of the 2-arm one. It is possible that there were transitions between the 66 and 66.1 variants or that the balance was swapped
- As caliber PRIM 68 also available with date
- Listing ID: 2207
- Manufacturer / Brand: PRIM
- Caliber: 66
- Size in French Lignes: 11 1/2''' (25.7 mm) (11''' according to manufacturer)
- Size range mm largest diameter: 22 - 31 mm
- Shape: Round
- Winding: Manual (Crown)
- Hands Setting: Crown
- Seconds Hand: Sweeping seconds (central seconds)
- Escapement: Lever (Swiss, English, Glashütte)
- Date, Day, Month...: None
- Jewels: 17
- Setting Lever Screw/Pin Position: Right
- Balance Position: Bottom (120 - 240°)
- Shock Protection: Incabloc
- Beats per hour: 18,000
- Balance Type: Gold-plated Nickel?
- Power Reserve: Unknown
- Production Period: 1965 - 1993 (all variants of the 66.x caliber)
- Country: Czech Republic
- Identification: Marking 66 under the balance wheel
- 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-40#post-5218835
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