8 3/4 x 12”’ | Hand Wind | Swiss Lever | Small Seconds

• Listing ID: 3389
• Manufacturer / Brand: ETA / Stowa / GERSI
• Caliber: ETA 717 = Stowa 800 = GERSI 142
• Size in French Lignes: 8 3/4 x 12'''
• 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: 15, 16
• 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: Approx. 43 hours
• Production Period: Unknown, probably around 1936 - 1950
• Identification: Listed in the Ebauches SA catalog from 1935 as ETA 717. Movement bridge of one movement marked with Stowa 800. Ratchet wheel of one movement marked with GERSI 142.
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-25#post-3602982
• Country: Switzerland
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)