There is no Rolex reference 1666/6. When a listing appears under replica rolex 1666/6 fake, the number is either a typing error for a real Submariner or Sea-Dweller reference, or a string invented to slip past brand filters. Whatever the seller calls it, the watch is an unlicensed counterfeit and not a Rolex model in any catalog.
Why 1666/6 Is Not a Real Reference
Rolex reference numbers are five digits, sometimes with a suffix for case metal or bracelet type. The formats that get garbled into "1666/6" are these:
Top Best Guide to Finding Fake Rolex 1666/6 for Sale
- 16610 - Submariner Date, steel, produced from the late 1980s into 2010.
- 16660 - Sea-Dweller 600m, the model collectors call the "Triple Six."
- 16600 - later Sea-Dweller, often confused with both of the above.
A slash in the middle is not part of any Rolex reference system. That detail alone tells you the listing was written by someone copying numbers from a photo caption or a forum post.
Why Counterfeit Sellers Use Broken Numbers
Marketplaces run automated filters on trademarked terms and known reference numbers. Sellers respond by scrambling digits, adding slashes, or pairing a real prefix with a junk suffix. The result is a heading that looks technical to a buyer but means nothing. It also makes the listing hard to track when it is removed and reposted under a new string.
Legal and Practical Risks
- Trademark law. Selling or importing counterfeit goods is illegal in the United States, and buying them for resale carries the same exposure.
- Customs seizure. US Customs and Border Protection routinely detains and destroys counterfeit watches entering the country.
- No service. A Rolex service center will not touch a counterfeit, and independent watchmakers often refuse them because parts do not fit.
- No resale value. Dealers and auction houses will not authenticate or buy them.
- Payment risk. Sites built around scrambled reference numbers frequently take wire transfers or crypto, which offer no chargeback.
How to Check a Listing Before You Trust It
- Compare the reference number against the official Rolex model archive or a printed collector guide.
- Check whether the same photos appear on other listings with different descriptions.
- Treat a price far below the pre-owned market as a signal, not a bargain.
- Ask whether the seller offers an authentication guarantee in writing.
Alternatives Worth Considering
If the appeal is the look of a classic dive watch rather than the name on the dial, established microbrands and vintage-inspired homages offer sapphire crystals, reliable movements, and real warranties at prices that counterfeit sellers charge. If the appeal is the Rolex itself, the pre-owned market for a genuine 16610 or 16600 is well documented, and a full set with papers holds value over time. No guide can make a fake reference number real.