Rolex 1570 was introduced in about 1965 as a replacement for the 1560. The main difference is the gear train is geared for for a higher beat rate and a new balance design. The new movement now had a beat rate of 19800 A/H from 1800. It also features a free Breguet hairspring balance with regulating screws. The 1575 (marked 1570) is the date version. The 1575 GMT features a 24 hour display. Later versions feature hacking lever and a final 1580 variant antimagnetic (Milgauss)
Rolex calibre 1570 series.
- Manufactured approximately 1965-1989
- Made in Switzerland
- Power reserve 48hours
- 25-26 Jewels
- Lift angle 52°
- Dm 28.3mm-28.5mm
- H 5.75mm
The movement bridges are finely finished with various perlage finish and angled edges. Centre seconds construction involves overlaying wheel driving a pinion. To avoid a stuttering second hand the pinion is tensioned by a spring. Not an ideal solution, but does the job. Very fine finish on screws.
Surface finish on top side of the plate and bridges: 8 Points
Surface finish on screws: 10 Points
Surface finish on crown and ratchet wheel: 7 Points
Movement Jeweling: 8 points
The movement is designed to be an automatic and is very robust.
Movement design innovation (for ca 1965): 9 points
The Rolex base plate dial side has a decent perlage finish on both the dial side and gear train side. Winding mechanisms are well made with a fine finish. The date change is a very clever design that is instant and has little effect on amplitude.
Base plate finish: 8 Points
Setting and winding mechanism: 8 Points
Date change snappiness 10 Points
Gear-train finish: 9 Points*
Movement durability: 8 Points
Later models do also feature hacking leaver
2 Extra bonus points*
The 1580 antimagnetic*
5 extra bonus points
Power reserve 48 hours is very good for an automatic of this time period.
Rolex 1570-75-80 points summary:
Surface finish on bridges and top side of base plate: 8
Surface finish screws: 10
Surface finish on ratchet and ratchet wheel: 7
Movement Jeweling: 8
Movement innovative design: 9
Total bonus points: 5-12*
Base plate finish: 8
Setting and winding mechanism: 8
Date change snappiness: 10*
Gear-train finish: 9
Movement durability: 8
Autowninder mechanism: 9 points
Power reserve: 9
Grand total: 107-124*
*If it has extra bonus points
Weak points are barrel bridge can get worn (not jewelled) Autowinder wheels can get worn. Rolex does not supply parts to independent watchmakers.