Short answer

A "Vacheron Constantin Traditionnelle 5500" is a listing label. Vacheron Constantin prints a full reference string on the caseback, in a format such as 82172/000R-9888. We could not confirm a reference or calibre numbered 5500 in the brand's published material. The short number in a title is seller shorthand. Get the full string before you compare anything else.

Four checks do most of the work: movement finish, dial print, caseback engraving, and price. One check alone can fail on a genuine watch. Two or more together are hard to fake.

1. Movement

Most Traditionnelle references have a sapphire caseback, so the movement is visible. Vacheron Constantin finishes its in-house calibres with Geneva stripes, circular graining, black-polished screws, and a Maltese cross engraved on the balance cock. The same movements carry the Hallmark of Geneva, a stamp held by the Canton of Geneva since 1886 and administered by an independent body. The stamp sits on the movement, not on the case.

Copy watches use Chinese or Japanese base movements. Common bases include the Seagull ST series and the Miyota 9015. Decoration plates cover the base movement on higher priced copies. Look at the edge of the caseback opening and at the gap under the balance wheel. A plate that stops short of the edge is a sign of a cover.

If the seller sends a movement photo, check screw slots. Hand-polished slots have a mirror face and chamfered edges. Plated screws have a flat gray face.

2. Dial and hands

Look at the applied Maltese cross below 12. On a genuine dial the cross has sharp interior angles and a polished bevel on each arm. On copies the cross is flat and the angles are rounded. The printed name sits under the cross. Compare letter spacing with a photo from the brand's own reference page, not with a seller photo.

Traditionnelle hands are baton or feuille shape, with polished sides and a flat top. Copy hands run thicker. A 10x loupe shows the difference at the tip. Check the small seconds or the date window if the reference has one. Copy date fonts are heavier and the window frame is wider.

3. Case and caseback

Measure the case with calipers and compare the number with the published specification. Copies run 0.3 mm to 1 mm thicker. Gold is about 2.4 times as dense as steel, so a solid gold case weighs more than a plated case of the same size. A kitchen scale reads the difference on a watch without a strap.

Caseback engraving is a second check. Genuine engraving has uniform depth, and the reference string, the serial, and the metal mark sit in a fixed layout. Copy engraving is shallow and the serial may not match the paperwork. The crown carries the Maltese cross on most references. Copy crowns have a shallow stamp or none.

4. Price and papers

Used Traditionnelle references in gold sell in the five-figure range at auction and on the used market. Copies sell from about $150 to $900. A five-figure watch offered at $600 is not a bargain. A seller who cannot send the reference string, the serial, and a photo of the caseback has not shown you a watch.

Genuine watches ship with a guarantee card and a certificate that match the case serial. Ask for both. Vacheron Constantin service can confirm a serial and the case metal. That step settles a dispute.

What the 5500 number tells you

The published reference format includes a five-digit case number, a slash, a metal and dial code, and a suffix. The number 5500 alone does not fit that format. Treat it as a search tag. Ask the seller for the engraved string and for a movement photo with the balance wheel in frame.

Legal note

Trafficking in counterfeit watches is a criminal offense in the United States and in the European Union. Customs can seize a shipment, and buyers who import a copy can lose the watch and the payment.