Tavannes 19’’’ 3.B Ref 931
157 views
19”’ | Hand Wind | Swiss Lever | Small Seconds |
Remarks:
- The crown wheel is missing on the movement shown
- Negative winding (referred to by the inscription “U. S. PAT. 24 MAY 1904” on the barrel bridge -> see patent US760647)
- Screw-set jewels (Chatons)
- Swan-neck fine regulator
- Listing ID: 3048
- Manufacturer / Brand: Tavannes
- Caliber: 19’’’ 3.B Ref 931
- Size in French Lignes: 19'''
- Size range mm largest diameter: > 40 mm
- Shape: Round
- Winding: Manual (Crown)
- Hands Setting: Crown
- Seconds Hand: Small seconds
- Escapement: Lever (Swiss, English, Glashütte)
- Date, Day, Month...: None
- Jewels: 15
- Setting Lever Screw/Pin Position: None (Negative Winding)
- Balance Position: Right (0 - 120°)
- Shock Protection: None
- Beats per hour: 18,000
- Balance Type: Bimetallic screw balance with Breguet hairspring
- Power Reserve: Unknown
- Production Period: Unknown, probably around 1936
- Identification: Listed in the Classification Horlogère of 1936, but shown there is the Savonnette (hunter) version Ref. 930 of this Lépine (open face) movement.
- External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-30#post-3948616
- Country: Switzerland
- Contributor ©: Uhrforum.de member Badener (Andreas Kelz)
Before being published, your comment will be checked by a moderator. Therefore you will not see it immediately!