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

Remarks:

• Screw-set jewel (Chaton) for the center wheel

• Listing ID: 5393
• Manufacturer / Brand: La Terrasse
• Caliber: Model No. 1
• 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: Right
• 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 1912
• Country: Switzerland
• Identification: Registered by La Terrasse Watch in the Swiss Official Gazette of Commerce on 15.08.1912 as model No. 1. Model No. 1 is 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-63#post-8852511