Gruen 311 Curvex
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7 3/4 x 11 3/4”’ | Hand Wind | Swiss Lever | Small Seconds |
Remarks:
- Movement family:
- Gruen 311: Curvex (curved bridge side), hidden winding parts
- Gruen 355: flat dial and bridge sides, exposed winding parts
- Gruen 355C: curved dial side, flat bridge side, exposed winding parts
- Listing ID: 8748
- Manufacturer / Brand: Gruen
- Caliber: 311 Curvex
- Size in French Lignes: 7 3/4 x 11 3/4''' (7 3/4 x 11''' according to the manufacturer)
- Size range mm largest diameter: 22 - 31 mm
- Shape: Form
- Winding: Manual (Crown)
- Hands Setting: Crown
- Seconds Hand: Small 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: None
- Beats per hour: 18,000
- Balance Type: Monometallic screw balance with Breguet hairspring
- Power Reserve: Approx. 40 hours
- Production Period: 1935+
- Identification: Movement marked with GRUEN and 311. Listed in the Paulson catalog from 1950.
- Country: Switzerland
- Contributor ©: Uhrforum.de member Badener (Andreas Kelz)
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