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

Remarks:

• Diafix setting on the escape wheel

• Listing ID: 4294
• Manufacturer / Brand: Seiko / Westclox
• Caliber: Westclox A-201 = Seiko 66B
• 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...: None
• Jewels: 17
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Seiko Diashock
• Beats per hour: 18,000
• Balance Type: Gold-plated Nickel?
• Power Reserve: 45 hours
• Production Period: Unknown, probably around 1060 - 1965
• Identification: Movement marked A-201. Compared to Seiko 66B.
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-13#post-2398441
• Country: Japan / U. S. A.
• Contributor ©: Uhrforum.de member malikka