Quick Answer
The Rolex Sky-Dweller 326939 is a 42 mm 18k yellow gold annual calendar on a leather strap. A replica of it stands or falls on three details: the case profile and gold tone, a Ring Command bezel that rotates through 60 defined positions, and an off-center 24-hour disc that tracks a second time zone while the current month shows in the aperture beside the matching hour marker. Miss any of those and you own a costume watch with a Sky-Dweller dial rather than a 1:1 build.
What the Genuine 326939 Does
The reference is the leather-strap version of the yellow gold Sky-Dweller, so the case, bezel, crown and clasp carry the gold while the strap is alligator. The movement is the caliber 9001, a self-winding annual calendar with dual time. Its party trick is the Ring Command bezel: the bezel itself is a selector. Rolex pairs it with month apertures set into the dial ring beside the twelve hour markers, with the active month shown in red.
- 42 mm case in 18k yellow gold, fluted bidirectional bezel
- Caliber 9001, annual calendar and dual time with 24-hour display
- Month apertures around the dial ring, current month in red
- Alligator strap with a gold folding clasp
Prerequisites Before You Inspect a Replica
- Reference photos of the genuine watch shot at the same angle: straight on, profile, and caseback.
- A caliper or digital ruler for case diameter and lug width.
- A loupe or a phone macro lens for dial print and clasp engraving.
- Daylight. Yellow gold tone reads wrong under warm indoor bulbs.
How to Check a Replica Sky-Dweller 326939
- Measure the case across the bezel without the crown. The genuine case is 42 mm, and low-tier replicas land at 40 or 44 mm because they reuse a Submariner or Datejust case.
- Grip the fluted bezel and turn it. It should step through 60 distinct positions, not spin free and not lock solid.
- Test the three selector positions the bezel controls: date, month, and dual time. Each position should change what the crown adjusts.
- Examine the dial print under magnification. The coronet, the text, and the marker feet should sit on the same baseline with no smeared edges.
- Watch the 24-hour disc in the upper half of the dial. It should advance in clean hourly jumps and align with the printed 24-hour track.
- Check the month apertures at each hour marker. Only the current month should read red, and the window edges should be cut sharp.
- Inspect the case flanks, crown, and caseback engraving. The reference number, the coronet, and the hallmarks should be crisp, not laser-etched and shallow.
- Flex the strap and work the clasp. Stitching should be tight and even, and the folding clasp should snap with a firm detent.
- Ask for a movement photo or open the caseback. Look for the solid gold rotor, the finishing on the bridges, and a balance wheel that sweeps in eight beats per second.
Common Failure Points
- Bezel that clicks but does not actually change the crown function
- 24-hour disc printed on a static plate, so it never moves
- Month window with all twelve months lit in red
- Plated case that shows a grey or coppery tone in shade
- Caseback opened to reveal a stock three-hand movement with no calendar module
Before You Buy
Ask for dated photos of the exact watch, not a catalog image, and confirm the return window in writing before payment. Weigh the total against what you are actually getting: a working annual calendar module and a real 60-step bezel cost more than plating and a decal, and a listing that prices both the same is hiding something. Keep in mind that selling a replica as a genuine Rolex is a criminal offense in the United States under trademark law, so buy for your own wrist and never for resale.