Condition Rank : Very Good
(Full serviced on July 5, 2026)
[Description of services]
Full disassembly, cleaning, inspection, lubrication, and assembly.
[Originality Verified] - Authentic Original
The watch is judged to be original and period-correct in its main configuration. Case and caseback, dial, movement, hands, bezel, and crown are considered original, and the period consistency is good.
[Features]
Ref. 1601 / cal. 1570 (w/hack) / 19,800 bph / 36mm case (excluding crown) / 20mm lug
Year of manufacture: c. 1974 / Serial No: 364xxxx
Non-waterproof.
[My impression]
I always have a soft spot for sigma dials, and this one has that quiet, refined look I never get tired of.
The white gold fluted bezel still keeps a pleasing sharpness, which really helps the whole watch feel crisp on the wrist.
[Dial] : Good
It appears to remain in original condition, with a sigma dial. No clear signs of redial, repainting, or relume. Light age and small marks are present.
[Hands] : Good
They appear original, with no clear signs of replacement or relume. Light age and surface wear are visible.
[Crystal] : Good
Plexiglass.
[Case, crown and back of the case] : Good
The case shows normal signs of age and use. Crown screw-in is good (approx. 1.1 turns to unlock). The serial number engraving is clear.
[Band] : New
New leather strap, not Rolex-signed.
[Action] : Very Good
Hand-winding, self-winding, time-setting, and date change around midnight work properly.
[Accuracy] : Very Good
About -1 to +5 sec/day. (Measured by Timegrapher)
