12 3/4”’ | Tuning Fork | Sweeping Seconds |

 

• Listing ID: 3022
• Manufacturer / Brand: Citizen / Bulova
• Caliber: Citizen 3721A / Bulova 2180G
• Size: 12 3/4''', height 4.9 mm
• Shape: Round
• Winding: Battery
• Hand Setting: Crown
• Seconds Hand: Sweeping seconds (central seconds)
• Escapement: Tuning fork
• Date & Day: None
• Jewels: 15
• Shock Protection: None
• Beats per hour: 360 Hz (not bph!)
• Balance Type: None
• Power Reserve: Unknown
• Production Period: Around 1974
• Identification: Movement marked with Citizen 3721A.
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-30#post-3973888
• Country: Japan
• Contributor ©: Uhrforum.de member JackDaniels83