19”’ | Hand Wind | Swiss Lever | Small Seconds |

Remarks:

• Postala was a brand of Jacot & Monnier from Tramelan in Switzerland. The company was transferred to Gagnebin & Nicolet in 1930.
• Swan-neck fine regulator
• In the Flume main catalog of 1912 there are 19”’ calibers with the designations 19,10 and 19,12, which apparently use the same parts. No differences are apparent. In addition to the Lépine (open face) version shown here, there are also Savonnette (hunter) versions of these calibers.

• Listing ID: 2746
• Manufacturer / Brand: Postala / Jacot & Monnier
• Caliber: Model No. 5 19''' Lépine
• 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: 16
• Setting Lever Screw/Pin Position: Left
• 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: Around 1912
• Country: Switzerland
• Identification: Listed in the Flume main catalog 1912. Registered in the Swiss Official Gazette of Commerce in 1912 as model No. 5. Model No. 5 was not an official caliber designation, but was used to register the design.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-33#post-4180082