19 1/4”’ | Hand Wind | Swiss Lever | Small Seconds |

Remarks:

• Lépine = open face movement
• The Swiss manufacturer Jaccard du Gros was taken over by the German merchant Max Mayer from Berlin in 1906
• The design of this movement looks much older than 1906. Perhaps it was intended to imitate the Glashütte design

• Listing ID: 14092
• Manufacturer / Brand: Mayer / Jaccard du Gros
• Caliber: 19 1/4''' Lépine
• Size in French Lignes: 19 1/4'''
• Size range mm largest diameter: > 40 mm
• Shape: Round
• Winding: Manual (Crown)
• Hands Setting: Crown with pin/pusher
• Seconds Hand: Small seconds
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Jewels: 15
• Setting Lever Screw/Pin Position: Left
• 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 1906
• Country: Switzerland / Germany
• Identification: Movement marked with S. J. G (registered 1906 by Max Meyer, succesor of Arthur Jaccard du Gros). Not listed in any movement identifier known to me.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)