Short answer: a real ref 14791 is a 1990s Royal Oak, and the fakes you run into are rarely clean copies. Most are frankens, meaning a genuine case with a redone dial or a swapped movement, or a modern replica case dressed with vintage-style parts. So the useful question is not "is it fake" but "does every part belong to this watch." Work through the dial, case, bracelet, movement, and paperwork in that order.
What the 14791 should be
The 14791 belongs to the same generation as the 14790, the slim Royal Oak line that followed the original 5402 Jumbo. Expect a thin automatic case, an octagonal bezel held by eight screws, an integrated bracelet that tapers into a folding clasp, and a tapisserie dial. Exact configuration, meaning steel or gold, dial color, and hand style, changes with the variant, so identify the variant first and compare against photos of known genuine examples before you judge anything else.
Dial tells
The dial is where most fakes fall apart. I look at three things first.
- Tapisserie grid. The raised squares should be sharp, even, and identical in size across the dial. Replica dials look soft, shallow, or slightly out of register near the date window.
- Printing. Compare letter weight, spacing, and position of the signature and any model text against a known example. Modern printing on a supposedly vintage dial is a red flag.
- Date window and hands. Aperture edges should be crisp, the date font period correct, the date centered. Hands should reach the minute track and show even finishing, with no tool marks or flat polishing.
Patina matters too. Lume on a tritium-era dial ages unevenly, so a dial that is uniformly creamy or bright white compared with the rest of the watch usually means a relume or a full repaint.
Case, bracelet, and bezel
Vintage Royal Oak cases live or die on finishing. The bevels along the bezel and lugs should be crisp, brushing should run in one direction, and the transition between polished and brushed surfaces should be clean. Look at the eight bezel screws: they are functional, tightened from the back with nuts, which is why the slot on the head rarely sits in a perfect pattern. If every slot lines up neatly, or the heads are glued in and immovable, that is a problem.
On the bracelet, check link count against the reference, how the links articulate, and how tightly the end links meet the case. The clasp should carry correct stamping and a marker's mark. Gold cases should show hallmarks that are crisp and correctly placed, not shallow stamps that fade into the metal.
Movement and caseback
Open the watch, or have someone open it. Vintage AP automatics of this era are thin, decorated by hand, and engraved with the caliber and adjustment markings. Look for depth in the finishing, a rotor that matches the period, and screws with clean slots. Modern clone movements give themselves away with flat decoration, laser text, and a rotor that is thinner or shinier than the case deserves.
Caseback engravings deserve the same treatment. Reference, case number, and maker's marks should be stamped with depth and period-correct fonts, not laser etched with a faint grey outline. The case number and the movement number are separate, and both should fall in range for the reference.
Paperwork and provenance
An Extract from the Archives from Audemars Piguet is the strongest single document you can get. It confirms the reference, the case and movement numbers, and the original date of sale. Box and papers help, but they can be faked, so weigh them below the extract and below a watchmaker's inspection. Service records, old dealer receipts, and auction results for the same variant fill in the rest of the picture.
Quick checklist
- Dial texture, printing, date font, and hand finishing compared with a known genuine example.
- Bezel screws functional, heads flush, backs showing matching nuts.
- Case bevels, brushing direction, and polished-to-brushed transitions clean.
- Bracelet taper, link count, clasp stamping correct for the reference.
- Movement period correct, hand finished, numbers inside range.
- Extract from the Archives requested before money changes hands.
How to buy without getting burned
Buy the seller before you buy the watch. A dealer who will open the case on camera, hand over the extract, and accept a return window is worth more than a listing with perfect photos. If a price looks far below the market for a genuine example, the case is usually genuine only in the listing text.
If what you actually want is the look of a 1990s Royal Oak rather than the collectible, top-tier replica makers now produce the same silhouette, dial, and bracelet feel for a fraction of the price, and you can wear it without worrying about provenance. Just go in knowing which of the two things you are buying.