Short answer

The Rolex Perpetual 1908 is the dress watch Rolex launched in 2023 to replace the Cellini. "52513" is one of the reference numbers that gets attached to it in replica listings and forum posts, and the number itself tells you almost nothing. Sellers recycle and combine codes constantly. Judge the watch, not the label. Know this going in too: the 1908 is a hard watch to copy well. Thin gold case, small seconds subdial, display caseback. A faker has to fake a movement you can see through the back glass.

What the real 1908 is

It is a 39 mm dress watch in yellow gold, white gold, Everose, or platinum. The case runs about 9.5 mm thick, which is thin for a modern Rolex. Water resistance is 50 m. The dial is domed, with applied gold numerals and a small seconds subdial at 6 o'clock, and that subdial carries a guilloche finish inside its ring. Inside is calibre 7140, a 66-hour automatic with a Syloxi hairspring and a free-sprung balance, certified to -2/+2 seconds a day. The caseback is sapphire, so the movement and its finishing sit on display. It ships on an alligator strap with a gold folding clasp.

Every one of those details is a checkpoint. Most replicas fail at least four of them.

The tells, roughly in order of how fast they show

  • Thickness. This is the big one. Genuine sits near 9.5 mm. Replicas usually land between 11 and 12.5 mm because the movement they use is thicker. On a dress watch, 2 mm is a visible hump under a shirt cuff.
  • Weight. Gold is roughly twice as dense as steel. A solid gold 1908 has real heft in the hand. A plated steel copy feels light and a little hollow, and the plating wears through at the lugs and crown first.
  • Movement through the caseback. Look at rotor engraving depth, the shape of the bridges, the jewel count, and whether the balance is free-sprung. Replicas tend to have shallow laser engraving and a regulator index the genuine movement does not have.
  • The subdial. Real guilloche has crisp concentric ridges that catch light as the wrist moves. Fakes usually have a stamped or printed texture that reads flat from arm's length.
  • Applied numerals and hands. Genuine pieces are polished solid gold with sharp edges. Copies have soft edges and a plated look, and the hands are often a touch too thick.
  • Strap. Embossed calf posing as alligator gives itself away with a too-regular scale pattern and no taper toward the clasp.
  • Crown. The fluted Twinlock crown should sit close against the case with a clean gap. Copies often use a wider crown with a shallower fluting cut.

Movement is where the whole thing collapses

Most dress-watch fakes hide a cheap movement behind a solid caseback. The 1908 does not let them. Calibre 7140 is a slim, heavily finished automatic, and a display back means anyone can hold the watch up to a light and look. Replicas in the $300 to $600 range generally run a decorated Asian automatic with a rotor that mimics the Rolex look from two feet away. Under a loupe, the fonts are wrong, the perlage is coarse, and the gear train does not match. Above $1,000 you get closer finishing, but the thickness problem stays, because no replica movement is as slim as the 7140.

Reference numbers are not a quality signal

You will see listings that stack keywords: 1908, 52513, 52508, super clone, Swiss movement. That is search optimization, not information. Ask for a straight-on caseback photo, a measurement across the case at the crown, and a clear shot of the dial at 12. If a seller will not send those, you have your answer no matter what reference number sits in the title.

The legal and practical side

Counterfeit watches are illegal to import into the United States and can be seized by customs. Trafficking in counterfeit goods carries criminal penalties under 18 U.S.C. 2320, and selling a replica as genuine is fraud on top of that. Practically, a replica also has no resale value, no manufacturer service, and no parts support. Many watchmakers will refuse to open one, because the parts do not exist and the movement is not what the dial claims.

If you just like the look

The 1908 is a classic sector-style dress watch, and that look is not owned by one brand. If it is the styling that appeals to you, the honest routes are a pre-owned Cellini, a vintage Rolex dress piece, or a dress watch from Nomos, Longines, or Grand Seiko at a fraction of the price. You get a real movement, real service, and something that holds value. That beats a gold-plated watch that gets spotted at arm's length.