Jayco 91 = Bifora 91/1 SC
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9 3/4”’ | Hand Wind | Swiss Lever | Indirect Sweeping Seconds |
Remarks:
- Riveted crown wheel (screwed on the original Bifora)
- Some of these movements also have plastic parts
- Listing ID: 3959
- Manufacturer / Brand: Jayco / Bifora
- Caliber: Jayco 91 = Bifora 91/1 SC
- Size in French Lignes: 9 3/4'''
- Size range mm largest diameter: 0 - 22 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: Left
- Balance Position: Bottom (120 - 240°)
- Shock Protection: Novodiac
- Beats per hour: 18,000
- Balance Type: Nickel
- Power Reserve: 44 hours
- Production Period: Unknown, probably ca. 1980 - 2000
- Identification: Movement construction identical to the Bifora movement. J 91 (J in a circle) marked under the balance, usually mirror-inverted, sometimes normal (see extra pictures)
- External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-17#post-2816570
- External Link 2: https://watch-movements.eu/blog/en/2017/11/19/bifora-and-jayco-a-german-indian-cooperation/
- Country: India
- Contributor ©: Uhrforum.de member Badener (Andreas Kelz)
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