13 1/2”’ | Battery | Electro-mechanically Controlled Balance Motor | Jumping Central Seconds |

Remarks:

• First German electro-mechanically wrist watch movenent
• Backwinder
• Battery type: 303
• Movements´is not self-starting. Pulling the crown locks the balance in a position, from which it starts when pushing the crown
• First pilot samples were produced in 1960. Approximately 1,000 pre-production samples with the caliber designation Durowe 860 were released.
• Laco/Durowe was aquired by Timex in 1959. The Durowe 861 later became the Timex M67

• Listing ID: 14658
• Manufacturer / Brand: Durowe
• Caliber: 861
• Size in French Lignes: 13 1/2'''
• Size range mm largest diameter: 22 - 31 mm
• Shape: Round
• Winding: Battery
• Hands Setting: Crown
• Seconds Hand: Jumping central seconds
• Escapement: Electro-mechanical
• Date, Day, Month...: None
• Jewels: 11
• Setting Lever Screw/Pin Position: None (Backwinder)
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Duro-Swing
• Beats per hour: 21,600
• Balance Type: Unknown material
• Power Reserve: At least 1 year
• Production Period: 1961 - 1962
• Country: Germany
• Identification: Movement marked with D 861
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)