10 1/2”’ | Hand Wind | Swiss Lever | Direct Sweeping Seconds | Date |

Remarks:

• Movement family:
  • Mauthe 612: fixed hairspring stud-holder, no date
  • Mauthe 612D: fixed hairspring stud-holder, date
  • Mauthe 612-1: mobile hairspring stud-holder, no date
  • Mauthe 612-1D: mobile hairspring stud-holder, date
  • Mauthe 612F: mobile hairspring stud-holder, no date, differences to 612-1 not known

• Listing ID: 13900
• Manufacturer / Brand: Mauthe
• Caliber: 612-1D
• 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: Sweeping seconds (central seconds)
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: Date
• Jewels: 17
• Setting Lever Screw/Pin Position: Right
• Balance Position: Bottom (120 - 240°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Nickel
• Power Reserve: Approx. 44 hours
• Production Period: Unknown, maybe around 1965
• Country: Germany
• Identification: Movement marked with MAUTHE 612-1 (= base movement w/o date). Listed in the Engelkemper catalog from 1969.
• 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-73#post-10126918