10 1/2”’ | Hand Wind | Swiss Lever | Small Seconds |

Remarks:

• Movement family:
  • Durowe 420: 10 1/2”’, small seconds
  • Durowe 421: 10 1/2”’, small seconds, modifications unknown
  • Durowe 422: 10 1/2”’, direct sweeping seconds
  • Durowe 520: 11 1/2”’, small seconds
  • Durowe 522: 11 1/2”’, direct sweeping seconds

• Listing ID: 10876
• Manufacturer / Brand: Durowe
• Caliber: 420
• Size in French Lignes: 10 1/2'''
• Size range mm largest diameter: 22 - 31 mm
• Shape: Round
• Winding: Manual (Crown)
• Hands Setting: Crown
• Seconds Hand: Small seconds
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Jewels: 17
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Duro-Swing
• Beats per hour: 18,000
• Balance Type: Monometallic screw balance
• Power Reserve: Unknown
• Production Period: Approx. 1952 - 1957
• Identification: Dial side marked with D 420. Listed in the Flume K1 catalog in the part from 1952.
• Country: Germany
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)