The maison that will read its own archives for you, and whose finishing no counterfeit reaches.
Founded 1839Geneva5 weighted checks
Patek Philippe sits at a level where counterfeiting is possible but rarely convincing, because the value is in hand finishing that takes a trained watchmaker hundreds of hours. What counterfeits do reach is the exterior — a Nautilus case, a correct dial, a plausible bracelet — and the movement behind it is always the answer.
The maison also runs the best documentary service in watchmaking. An Extract from the Archives confirms the production and sale date, the calibre, the case metal and the original configuration against records kept since 1839. For any Patek of consequence it is the first thing to obtain.
The Nautilus and Aquanaut carry almost all the counterfeit volume, because they carry almost all the demand. Dress references are counterfeited far less and are far more likely to be genuine watches with replaced dials.
Every Patek carries two numbers: a case number engraved on the case, and a movement number engraved on the movement. On a genuine, unmolested watch they correspond to each other in the maison's records, and the Extract from the Archives states both.
The extract is ordered from Patek Philippe for a fee and confirms the production date, the sale date, the calibre, the case metal and the original dial configuration. A watch whose extract describes a different dial from the one fitted has been redialled or reassembled — which is not counterfeiting but is a material fact.
The maison also stamps the Patek Philippe Seal on modern movements, replacing the Geneva Seal it used previously. Both are quality marks applied to the movement, and both are struck rather than printed.
No public database exists. The extract is the mechanism, and it is worth the fee on any watch above a modest value.
Ordered by how much each one settles. The decisive checks are the ones worth your first five minutes; the supporting ones only matter once those are clean.
Patek finishes by hand to a standard no counterfeit reaches: bevelled edges polished to a mirror on every bridge, inward angles that a machine cannot cut, perlage across the plates, and screw heads polished and chamfered. Under a loupe through the display back the difference from a decorated ébauche is immediate and total.
Two engraved numbers that correspond in the maison's records, confirmed by an Extract from the Archives naming the calibre, metal and original configuration. Any watch of consequence should be sold with one, and a seller unwilling to obtain one on a valuable Patek has told you something.
Text is printed to a jeweller's standard with sharp edges at high magnification, and applied markers are polished, level and mounted with no adhesive visible. The maison's signature is exactly proportioned. Redialled Pateks are the commoner problem here, and they show as printing that is very slightly soft.
The Nautilus case has a specific relationship between its brushed top surfaces and polished flanks, with boundaries that are dead straight and corners that are crisp. Its ears are shaped precisely. Counterfeits soften every one of those transitions, which is visible under a light held at an angle.
Patek bracelets articulate smoothly with no rattle and no gap at the end links, and the clasp closes with a machined, definite action. A bracelet that rattles or a clasp that closes loosely is a failure at a level this maison does not produce.
The counterfeit Nautilus market grew enormously as the model's waiting lists lengthened, and the best of it is externally convincing. It is defeated by the movement every time, because hand-finishing is the one input that cannot be industrialised.
For any Patek, the correct procedure is documentary and mechanical together: obtain the extract, then have a watchmaker who knows the maison open the case. Both steps are cheap relative to the watch.
Each of these is checked differently. The ones with their own page have enough that is specific to them to be worth reading separately.
The rounded-octagon sports reference on a composite strap.
Read within the checks aboveThe dress reference, where redialling is the commoner problem than counterfeiting.
Read within the checks abovePerpetual calendars and chronographs, where the movement is the entire watch.
Read within the checks aboveAuthenticity and value are separate questions, and answering the first is usually a step towards the second. These are broad ranges for honest, unrestored condition — an orientation, never an appraisal.
| Line | Secondary market behaviour | What moves it most |
|---|---|---|
| Nautilus | Well above retail | Reference, completeness, extract |
| Aquanaut | Above retail | Reference and colour |
| Calatrava | Below retail | Originality of dial, metal |
| Complications | Highly variable | Complication, provenance, extract |
Broad international behaviour. The gap between sports and dress references at this maison is wider than at any other.
Lovenhall WatchThe checks tell you how it was made. The instrument tells you what it appears to be, and roughly what its kind fetches.