11 1/2”’ | Hand Wind | Swiss Lever | Direct Sweeping Seconds | Date |

Remarks:

• Date quick setting by repeatedly changing 20:30 – 24 o’clock
• Movement family:
  • Kienzle 07710 = Durowe 7420, 7420/2: hand winding, no date
  • Kienzle 07720 = Durowe 7422/2: hand winding, date
  • Kienzle 07730 = Durowe 7423/2: hand winding, date, day
  • Kienzle 09210 = Durowe 7525/1: automatic, date
  • Kienzle 09220 = Durowe 7523/2: automatic, date, day

• Listing ID: 21149
• Manufacturer / Brand: Durowe / Kienzle
• Caliber: Kienzle 07720 = Durowe 7422/2
• Size in French Lignes: 11 1/2'''
• Size range mm largest diameter: 22 - 31 mm
• Shape: Round
• Winding: Manual (Crown)
• Hands Setting: Crown
• Seconds Hand: Sweeping seconds (central seconds)
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: Date
• Jewels: 17
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Duro-Swing
• Beats per hour: 21,600
• Balance Type: Glucydur
• Power Reserve: Approx. 43 hours
• Production Period: Unknown, probably around 1972
• Country: Germany
• Identification: Movement marked with D 7422/2 under the balance wheel. And with K 07220. Durowe 7422 listed in the Flume K3 catalog from 1972.
• Contributor ©: Uhrforum.de member buchenhain
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-80#post-10939038