3/0 size (= 12 1/2”’) | Hand Wind | Swiss Lever | Small Seconds |

Remarks:

• Hampden Screw fine regulator

• Listing ID: 11369
• Manufacturer / Brand: Hampden
• Caliber: Model 4 Diadem
• Size in French Lignes: 3/0 size (= 12 1/2''')
• Size range mm largest diameter: 22 - 31 mm
• Shape: Round
• Winding: Manual (Crown)
• Hands Setting: Crown with lever
• Seconds Hand: Small seconds
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Jewels: 15
• Setting Lever Screw/Pin Position: None (Negative Winding)
• Balance Position: Bottom (120 - 240°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Bimetallic screw balance
• Power Reserve: Unknown
• Production Period: Around 1906 based on the serial number
• Identification: Via serial number of the movement in this database: https://pocketwatchdatabase.com/search/result/hampden/2266241
• Country: U. S. A.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)