The short answer
A replica Rolex 1908 (and any listing tagged ref 52517) lives or dies on three things: the movement, the case thickness, and the dial finishing. The 1908 is a dress watch, so there is nowhere to hide. A cheap fake gives itself away the moment you put it next to a wrist, because the case is too thick, the small seconds hand stutters, and the strap is embossed calf pretending to be alligator. A good super clone gets the silhouette right and the movement close enough that a casual inspection at arm's length passes. If you want the honest version: buy the clone for the look and the feel, not because anyone will mistake it for gold.
What the 1908 actually is
Rolex launched the Perpetual 1908 to replace the Cellini line, and it went straight after the classic Calatrava-style dress watch. The real watch is 39mm across, around 9.5mm thick, and made only in precious metal: 18k yellow gold, 18k white gold, and platinum. The platinum version carries a guilloché dial in ice blue with a rice-grain pattern. Other variants use a domed, sunray or opaline dial with applied numerals at 3, 9 and 12. No date. Small seconds subdial sitting dead center at 6 o'clock. Alligator strap with a double folding clasp that Rolex calls the Dualclasp.
Reference numbers inside the 1908 family split by metal and dial combination, and 52517 is one of those splits. Before you compare a replica against photos, confirm which metal and dial your reference actually uses on Rolex's own product page. Mixing up a yellow gold dial with a platinum dial is the fastest way to end up with a replica that looks wrong for its own reference number.
The movement is where the money goes
The genuine 1908 runs caliber 7140, a micro-rotor automatic with a 66-hour reserve, certified to -2/+2 seconds a day. A micro-rotor sits flush with the movement instead of spinning on top of it, and that is exactly what keeps the case thin.
Replica tiers break down like this:
- Entry fakes: a standard thin automatic with a big rotor screwed on top, or a decorated plate hiding a quartz module. The case ends up 1.5 to 2mm too thick and the seconds hand ticks instead of sweeping.
- Mid-tier: a decorated clone of a common Swiss automatic, good sweep, decent finish, wrong architecture. Take the caseback off and the rotor is a giveaway.
- Top-tier super clones: actual micro-rotor copies, engraved bridges, blued screws, correct jewel count. These cost several hundred dollars and up, and they are the only ones worth talking about for this model.
Ask the seller for a photo of the movement with the caseback off. If the answer is "we don't open them" or the picture shows a rotor spanning the whole movement, you know which tier you are dealing with.
Case, dial and the details people miss
Weigh the watch in your head before it arrives. Gold is dense. A steel replica with gold plating will feel light and slightly cold in a way the real thing never does, and the plating wears at the lugs and the clasp corners within months. Look for these:
- Case thickness under 10mm. If the listed spec says 11mm or more, it is not shaped like a 1908.
- The fluted or domed bezel profile, which should curve smoothly into the lugs, not sit as a separate ring.
- Subdial position at 6, with hands the right length and a properly recessed track.
- Applied numerals with polished edges and flat tops. Printed numerals are a tell.
- Crown proportions: small, signed, sitting almost flush. Oversized crowns are common on fakes.
- Strap: real alligator has irregular scale patterns that vary across the length. Embossed calf repeats the same pattern.
- Clasp: a double folding clasp with crisp engraving and a firm, two-stage snap.
How to judge a seller
I look at four things. First, movement photos, not renders. Second, whether the listing names the exact movement instead of saying "Swiss movement" generically. Third, whether the same seller shows real photos of the watch on a wrist in daylight, since studio shots hide dial finishing. Fourth, whether returns are accepted at all. A seller who refuses returns on a several-hundred-dollar item is telling you something.
What a replica will not do
It will not pass a watchmaker's inspection. It will not hold value. It will not be gold, and the hallmark stamps are cosmetic. Do not let anyone sell it to you as genuine, and do not try to sell it as genuine yourself. Wear it as what it is: a well-made stand-in for a dress watch most people will never handle up close.
Quick checklist before you pay
- Confirm the metal and dial for ref 52517 against Rolex's listing.
- Demand a photo of the movement, caseback off.
- Check stated case thickness against 9.5mm.
- Ask what the strap material actually is.
- Confirm the clasp type and engraving quality.
- Read the return policy twice.