The short answer

Most fake Must de Cartier Pasha watches fail on the case metal and the crown cap. Real Must Pashas from the 1980s and 1990s use a vermeil case, which is sterling silver plated with gold, and the caseback carries French silver hallmarks plus a plating mark. Fakes use brass or steel with paint or thin electroplating, and the caseback is blank or stamped with a vague "Stainless Steel" line. Check the metal first, then the crown cap and its chain, then the movement. A fake usually shows two or three defects at once, not one.

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Before you start

  • A 10x loupe
  • A digital scale accurate to 0.1 g
  • Calipers
  • A watchmaker who will open a screw-back case for you
  • Photos of the exact reference you are comparing against

1. Check the case metal and hallmarks

Vermeil is the fastest tell. It is a silver case with a gold layer, and French law required marks that fakers rarely copy in the right place.

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  1. Look inside the caseback for a "925" stamp, a Minerva head guarantee mark, and a plating mark such as "PLAQUE OR G 20".
  2. Weigh the bare case head; a gold-plated silver head feels dense for its size, while a brass fake feels light and a steel fake feels cold and hard for the same volume.
  3. Rub the caseback edge with a soft cloth and look for a copper or brass tint bleeding through the plating.

2. Inspect the crown cap and its chain

The Pasha crown sits under a screw-on cap held by a short chain. This is the part counterfeiters get wrong most often.

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  1. Unscrew the cap and confirm it is a separate piece from the crown, hanging from a chain anchored to a lug.
  2. Pull the chain with light finger pressure; real chains articulate link by link, fakes use a cast piece or a stiff wire.
  3. Check the cabochon, which should sit flush in the cap with no glue ring and no cloudy surface.

3. Test the grid over the crystal

  1. Confirm the grid is a separate metal piece held by screws, not molded into the glass or glued on top of it.
  2. Count and align the screws on both axes; fakes often show screws on one side only or slotted heads with no recess.
  3. Look at the gap between the grid and the crystal; a real grid sits level with even clearance all round.

4. Read the dial and hands under magnification

  1. Check the printed "Cartier" and "Swiss Made" for sharp edges, even stroke weight and no ink bleed.
  2. Compare numeral shape and spacing against photos of the same reference, and look for the secret signature where that reference carries one.
  3. Confirm the hands are the correct shape with a clean bevel and no file marks or scratches at the pinion.

5. Open the case and read the movement

  1. Have a watchmaker open the caseback; do not pry a screw-back yourself.
  2. Read the movement signature and confirm it is a Cartier-signed quartz calibre that matches the reference for that production year.
  3. Check the spacer ring and gasket; hand-cut plastic rings and loose gaskets are common in fakes.

6. Match the reference and serial

  1. Find the reference number and serial on the caseback and compare them with the paperwork.
  2. Ask Cartier client service whether the reference and serial format fit the production period before you pay.

7. Check the bracelet, clasp and end links

  1. Inspect clasp stamping for depth, spacing and font against a known example.
  2. Fit the end links to the case; genuine links sit flush with no gap and no side play.
  3. Confirm whether the reference uses screw pins or push pins, then check what is actually fitted.

8. Run a price and paperwork sanity check

  1. Compare the asking price with recent sold prices for the same reference in the same metal.
  2. Ask for service history, box and papers; missing paperwork is normal on a 30-year-old watch, missing paperwork plus a bargain price is not.

What a fake usually gets wrong

The plating mark and the chain are the two failures that repeat. A fake that copies the dial well still tends to use a one-piece crown cap, a stamped caseback with no silver mark, and a generic quartz movement with no signature. Look at those three points before you look at the dial.

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