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

Remarks:

• Movement family:
  • Helvetia 18 1/2”’ H4.8 Lépine: open face movement, height 4.8 mm
  • Helvetia 18 1/2”’ H5.5 Lépine: open face movement, height 5.5 mm
  • Helvetia 18 1/2”’ H4.8 Savonnette: hunter movement, height 4.8 mm
  • Helvetia 18 1/2”’ H5.5 Savonnette: hunter movement, height 5.5 mm
• According to movement catalogs this movement has a height of 5.3 mm, in reality it’s 5.5.

• Listing ID: 11619
• Manufacturer / Brand: Helvetia
• Caliber: 18 1/2''' H5.5 Savonnette
• Size in French Lignes: 18 1/2''', Height 5.5 mm
• 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: Bottom (120 - 240°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Monometallic screw balance with Breguet hairspring
• Power Reserve: Unknown
• Production Period: Unknown
• Identification: Lépine version listed in the Flume K1 catalog in the part from 1947.
• Country: Switzerland
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)