6 3/4 x 8”’ | Hand Wind | Swiss Lever | No Seconds |

Remarks:

• The hour wheel is missing from the movement pictured

• Listing ID: 1240
• Manufacturer / Brand: Hermann Becker
• Caliber: HB 900-75
• Size in French Lignes: 6 3/4 x 8'''
• Size range mm largest diameter: 0 - 22 mm
• Shape: Form
• Winding: Manual (Crown)
• Hands Setting: Crown
• Seconds Hand: Sweeping seconds (central seconds)
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Jewels: 17
• Setting Lever Screw/Pin Position: Right
• Balance Position: Right (0 - 120°)
• Shock Protection: Antichoc-S65
• Beats per hour: 21,600
• Balance Type: Nickel
• Power Reserve: Unknown
• Production Period: Probably around 1975
• Identification: Movement marked HB900-75
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-48#post-6465237
• Country: Germany
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)