The Rolex 179171 is a 26 mm Lady-Datejust built in Everose Rolesor, a combination of steel and 18 ct Everose gold. Replicas of this reference come from a small number of Chinese factories, and most fail in the same three places: the case profile, the dial furniture, and the bracelet end links. Check those first. A replica that survives the case and bracelet pass deserves a closer look; one that fails is not worth the shipping cost.
What the reference 179171 actually is
Rolex catalogued the 179171 inside the Lady-Datejust 26 line. Genuine examples use a 26 mm Oyster case, an Everose gold fluted or domed bezel, a Twinlock winding crown, a sapphire crystal with a Cyclops lens over the date, and calibre 2235 with a 28,800 vph beat rate and roughly 48 hours of power reserve. The bracelet is a five-link Jubilee or a three-link Oyster, both with a folding Crownclasp. Water resistance is rated at 100 m. Any replica that ignores these baseline numbers is a costume piece, not a replica.
Prerequisites
- Digital calipers that read to 0.1 mm
- A 10x loupe
- A jeweler's scale that reads to 0.1 g
- Printed or saved photos of a genuine 179171 dial, bezel and clasp
- A timegrapher, or access to a watchmaker who owns one
Step-by-step inspection
- Measure the case diameter across the bezel at the 9 and 3 o'clock edges and compare the result with 26.0 mm. Replicas routinely overshoot by 0.3 to 0.6 mm because factories reuse a larger case middle.
- Check the case thickness and the lug profile against a side-on photo of a genuine watch. The 179171 has slim, downward-curving lugs; replica lugs sit thicker and flatter.
- Examine the fluted bezel under the loupe. Genuine Everose flutes are cut gold with sharp, evenly spaced ridges and a warm pink tone. Replica flutes are shallow, and the plating wears to a dull yellow at the outer edges.
- Inspect the dial print. The coronet should be crisp and raised on applied markers, the "ROLEX" lettering clean at 10x, and the date wheel font consistent with the reference.
- Look through the Cyclops lens. Genuine magnification is about 2.5x and the date fills the window. Replica lenses magnify 1.5x to 2x and show a visible halo at the edge.
- Charge the lume with a torch for 30 seconds, then check the glow in a dark room. Genuine Chromalight burns blue and fades slowly; replica lume glows green and dies within minutes.
- Weigh the watch head. Everose Rolesor carries real gold in the bezel and center links, so a plated steel replica comes in noticeably lighter for the same case size.
- Test the bracelet articulation and end-link fit. Push each link sideways; genuine Jubilee links move with resistance, while replica links rattle and leave a gap at the lugs.
- Read the clasp stamping under the loupe. Look for the coronet, the reference code, and a clean "STEELINOX" or "904L" mark. Replica stamps are shallow and often misspelled.
- Unscrew the crown and count the positions. Winding, date setting and hand setting must all engage with a firm click, and the crown should seat flush against the case tube.
- Photograph the engravings between the lugs at 12 and 6 o'clock. Reference and serial text should be crisp and correctly spaced, not laser-etched with a dotted edge.
- Run the watch on a timegrapher for 60 seconds. Confirm 28,800 vph, a lift angle near 52 degrees, and a rate inside plus or minus 15 seconds per day. A 21,600 vph reading means a budget movement sits inside.
Common flaws on 179171 replicas
The most frequent defect is the bezel metal. Even the better factories plate a brass or steel bezel with Everose color, so the tone shifts toward copper under daylight and the flutes blur after a few months of wear. The second defect is the date window, which sits slightly off-center because the dial is stamped from a generic 26 mm blank. The third is the bracelet: end links sit proud of the case on most replicas, and the clasp closes with a hollow sound. Ask for macro photos of the lugs, the date window and the clasp before you commit to any purchase.
Legal and practical notes
Replica watches infringe Rolex trademarks and are illegal to sell as genuine in the US and the EU. Customs services seize counterfeit shipments, and a replica carries no warranty, no service history and no resale value. Treat any purchase as a novelty expense, never as an investment, and never as a substitute for a genuine watch in a resale transaction.