Seiko started production of their first chronograph movement in 1964. The base movement was based on their earlier calibre 560 and was designated calibre: 5719 (No date) and 5717 (With date). It has a single pusher design: Start, stop reset. The chronograph features a central seconds counter only. The date mechanism on the 5717 also features a nifty quick set date mechanism.
Seiko calibre: 5719-5717
- Made approximately: 1964-1967
- Made in Japan
- Power reserve 41h
- 21 Jewels
- 18000 B/A
- DM 26.6mm
- H 6.1mm
Surface finish on the Seiko have nickel silver plating. Gear train bridge has a decent decoration and straight edges, but some nice beveled details. Screws are polished and have a good finish. Crown and ratchet wheel situated under gear train bridge has a basic fine finish. Movement has a respectable 21 jewels including capped escape wheel. Seconds recorder is driven directly from fourth wheel.
Surface finish on top side of the plate and bridges: 6 Points
Surface finish on screws: 8 Points
Surface finish on crown and ratchet wheel: 6 Points
Seconds recorder design: 5 points
Finish on chronograph components: 7 Points
Movement Jeweling: 8 points
Movement design innovation (for ca 1964): 8 points
The Seiko base plate on the calibre 5717 is rather basic with no decoration, but overall well executed and a decent finish. Winding/setting mechanism is well made. Gear train has a good finish.
Base plate finish: 6 Points
Setting and winding mechanism: 7 Points
Gear-train finish: 8 Points
Date design snappiness: 7 Points
Movement durability: 8 Points
Crown wheel and ratchet wheel are under the bridge. the ratchet actually operates on the crown wheel.
The date has a star operated quick set that can forward and retard the date.
4 Bonus points
Calibre: 5717-1719
Are well timed and fairly accurate watches when in good condition
Accuracy: 8 points
Power reserve of 41 hours is acceptable.
Power reserve: 7 Points
Seiko calibre 5717-5719 points summary:
Surface finish on bridges and top side of base plate: 7
Surface finish top screws: 8
Surface finish on ratchet and ratchet wheel: 6
Seconds recorder desing: 5
Finish on chronograph components: 7
Movement Jeweling: 8
Movement innovative design for ca 1964: 8
Total bonus points: 4
Base plate finish: 6
Setting and winding mechanism: 7
Gear-train finish: 8
Date snappiness: 7
Movement durability: 8
Accuracy: 8
Power reserve: 7
Grand total: 93-104
You must be logged in to post a comment.