"Fake Rolex 1666 6" is not a real Rolex reference number. The digits almost always come from two real references that get mistyped: the Submariner Date 16610 and the Sea-Dweller 16660, the model collectors call the "Triple Six." If you searched that string, you are most likely looking at a replica of one of those two watches, and the buyer's checklist below applies to both.

What Rolex reference is "1666 6" supposed to be?

Rolex built these references in the 1980s and 1990s: 16610 (steel Submariner Date), 16613 (steel and gold Submariner), 16600 (Sea-Dweller), 16660 (Sea-Dweller "Triple Six"), and 1665 (the earlier Sea-Dweller). All are five-digit references, which is why a dropped or doubled digit turns into "1666 6."

The 16660 is the one most often confused. It has a helium escape valve, a thicker case, and no cyclops magnifier over the date.

Why do 16610 and 16660 get typed wrong?

Both share the prefix 166, so a quick search box entry blends them. The 16610 ends in 0, the 16660 ends in 0 as well, and the middle digit decides everything.

Adding a space, as in "1666 6," is a common pattern when someone reads a case-back number off a replica with uneven engraving.

How do you judge a replica Submariner or Sea-Dweller in person?

Movement

A real 16610 runs a Rolex calibre 3135 at 28,800 vibrations per hour, with a smooth sweep and a quickset date. Replicas with a low-beat movement show a visibly choppy seconds hand and a date that snaps instead of turning over gradually.

Case, crystal, and bezel

Check the crystal height. Genuine Subs sit nearly flush inside the bezel ring, while many replicas leave the crystal proud by a fraction of a millimeter. Rotate the bezel and count detents: genuine 16610 bezels click 120 times per full turn.

Bracelet, clasp, and dial

Look at the clasp stamping and the end-link fit. A loose fit with visible gaps at the lugs is the fastest tell on any replica. On the dial, confirm that the coronet sits centered above 12 and that the lume plots match in color across all markers.

What legal and shipping risks come with buying a fake Rolex?

Counterfeit watches are subject to seizure and destruction at the U.S. border, and importing them can expose a buyer to civil penalties. Selling a counterfeit watch is trademark infringement, not a gray-area transaction.

Customs officers inspect watch shipments routinely, and a seized parcel usually means both the watch and the money are gone.

Frequently asked questions

Is a fake Rolex 16610 worth buying?

Only if you accept that it has no resale value and cannot be serviced by Rolex. A used genuine 16610 holds value; a replica is a disposable object from day one.

What does "Triple Six" mean on a Sea-Dweller?

It refers to reference 16660, the first Sea-Dweller with a sapphire crystal and a 1,220-meter depth rating. Collectors adopted the nickname from the repeating 6s.

How much should a high-end replica Submariner cost?

Serious replica builds sit in the low hundreds of dollars, and anything far below that uses a stamped bracelet and a disposable movement. Price alone tells you which tier you are looking at.