18”’ | Hand Wind | Cylinder | Small Seconds |

Remarks:

• There is also a Langendorf / Lanco 550 for Union Horlogère with different bridges

• Listing ID: 726
• Manufacturer / Brand: Langendorf / Lanco
• Caliber: 550
• Size in French Lignes: 18'''
• Size range mm largest diameter: > 40 mm
• Shape: Round
• Winding: Manual (Crown)
• Hands Setting: Crown with pin/pusher
• Seconds Hand: Small seconds
• Escapement: Cylinder
• Date, Day, Month...: None
• Jewels: 10
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Brass
• Power Reserve: Unknown
• Production Period: Unknown, probably around 1936
• Country: Switzerland
• Identification: Listed in the Classification Horlogère from 1936 and in the Flume K1 catalog in the 1947 part.
• 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-55#post-7677133