PUW developed the 1261 as an automatic movement.
260 manual/1260 Automatic
261 manual date/1261 Automatic: date
- Made approximately: 1960-1966
- Made in West Germany
- Power reserve 41h
- 17-25 Jewels
- 18000 B/A
- Lift angle 52°
- DM 26.0mm
- H 3.7-5.1mm
Surface finish is utilitarian with no decoration. Screws are polished and of acceptable finish. Balance has full shock protection.
Top surface finish on plates: 6 Points
Surface finish on screws: 6 Points
Surface finish on ratchet and ratchet wheel: 4 Points
Movement Jeweling: 6-8* Points
The movement is designed to be a centre second movement and quite modern for its time.
Movement design innovation (for 1960): 7 points
The PUW base plate has a utilitarian finsih. Winding, date and setting mechanisms are well made, but with a low finish on the screws. Gear train has a decent finish. Setting the time feels balanced. Date change is a little sluggish.
Base plate finish: 5 Points
Setting and winding mechanism: 6 Points
Date change snappiness: 4 Points*
Gear-train finish: 7 Points
Movement durability: 6 Points
PUW 260-1260-261-1261 summary:
Surface finish on bridges and top side of base plate: 6
Surface finish screws: 6
Surface finish on ratchet and ratchet wheel: 4
Movement Jeweling: 6-8*
Movement innovative design for ca 1955: 7
Base plate finish: 5
Setting and winding mechanism: 6
Date change snappiness: 4*
Gear-train finish: 7
Movement durability: 6
Total bonus points: 2*
Power reserve: 7
Grand total: 77-79*
*Higher jewelled variant
Movement weak points are auto mechanism can wear causing Derby to fall into base movement.