18 1/2”’ | Hand Wind | Swiss Lever | Small Seconds |

Remarks:

• The Swiss patent number 35344 marked on the wheel train bridge belongs to a patent granted to Leon Lévy & frères in 1905. The patent describes the balance bridge used here instead of a balance cock.

• Listing ID: 854
• Manufacturer / Brand: Lévy Model No. 1 Lépine
• Caliber: Model No. 1 Lépine
• Size in French Lignes: 18 1/2'''
• 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: 15
• Setting Lever Screw/Pin Position: Left
• Balance Position: Left (240 - 360°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Monometallic screw balance with Breguet hairspring
• Power Reserve: Unknown
• Production Period: Around 1905
• Country: Switzerland
• Identification: Registered by Leon Lévy & frères in the Swiss Official Gazette of Commerce on 25.11.1905 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-52#post-7123491