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

Remarks:

• The movement is a Langendort / Lanco 550 with modified bridges for Union Horlogère
• Dial side is marked with DÉPOSÉ (registered), but I couldn’t find a corresponding registration in the Swiss Official Gazette of Commerce

• Listing ID: 19044
• Manufacturer / Brand: Langendorf / Lanco / Union Horlogère
• Caliber: 550 for Union Horlogère
• 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: 6
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Holes in setting lever spring or rocking bar: 0 = no setting lever spring and no rocking bar
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Brass
• Power Reserve: Unknown
• Production Period: Unknown
• Country: Switzerland
• Identification: Movement marked with U. H. (= Union Horlogère). As Langendorf 550 listed in the Classification Horlogère from 1936 and in the Flume K1 catalog in the 1947 part.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)