Felsa 158
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8 3/4”’ | Hand Wind | Swiss Lever | Small Seconds |
Remarks:
- Also available without seconds
- Slightly different dial sides and bridge shapes available (see pictures)
- Very similar to Felsa 105, but some screws have different positions
- Listing ID: 10880
- Manufacturer / Brand: Felsa
- Caliber: 158
- 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: Small seconds
- Escapement: Lever (Swiss, English, Glashütte)
- Date, Day, Month...: None
- Jewels: 15
- Setting Lever Screw/Pin Position: Left
- Balance Position: Bottom (120 - 240°)
- Shock Protection: None
- Beats per hour: 18,000
- Balance Type: Monometallic screw balance
- Power Reserve: Unknown
- Production Period: Unknown, probably around 1928
- Country: Switzerland
- Identification: Listed in the Ebauches SA catalog from 1928.
- Contributor ©: Uhrforum.de member Badener (Andreas Kelz)
First movement on the photos is Felsa 105, not 158.
In fact it is a Felsa 158, not a 105! See the excerpt from the Ebauches SA catalog I just added. The 158 has some different screw positions compared to the 105.
If you look at the dial side, the photo you shared matches the second movement, but not the first one. Jobin 1936 has both of them listed.
Jobin shows the older version without setting lever spring for the 105 family and the newer one with setting lever spring for the 158. But both the 105 and 158 exist with and without setting lever springs! In this specific case the screw positions seem to me to be the better way to distinguish between 105 and 158.
Checked Ebauches SA 1928, maybe you are right, as that one shows 105 only with setting lever spring…