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

Remarks:

• Same movement with bigger base plate of 11 1/2”’: ETA 1281

• Listing ID: 7137
• Manufacturer / Brand: ETA / Benrus
• Caliber: ETA 1280 = Benrus DM 21
• 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: Small seconds
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Jewels: 17
• Setting Lever Screw/Pin Position: Right
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Benrus specific
• Beats per hour: 18,000
• Balance Type: Monometallic screw balance
• Power Reserve: Unknown
• Production Period: Unknown, probably around 1955
• Identification: Movement marked with BENRUS MODEL DM 21. As ETA 1280 listed in the "Official Catalogue of genuine Swiss Watch repair parts" from 1955.
• Country: Switzerland
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)