Quick answer
A fake Cartier Panthère medium is a copy of the 27 mm by 37 mm Panthère de Cartier, the size most people mean when they say "medium." The original is a quartz watch in a steel or gold case with a brick-link bracelet, and it is the most replicated model in the line because it suits wrists from about 5.5 to 7 inches. Replica quality splits into rough copies, mid-tier builds, and the top tier sold as 1:1 or super clone. The top tier gets the case outline and dial layout close. What it still misses is case thickness, crown cabochon color, dial printing under magnification, and the finish on the bracelet links.
Genuine specs to compare against
Start with numbers, not photos. The medium case measures 27 mm across and 37 mm from lug to lug, with a thickness under 7 mm. Water resistance is 30 meters. The movement is quartz, so the seconds hand advances one tick per second. The crown is faceted and set with a blue synthetic spinel cabochon. The dial is silvered with printed Roman numerals and sword-shaped hands, and Cartier hides a secret signature inside one of the numerals. The caseback is solid and engraved with the reference, the serial, and the Swiss Made mark.
Bracelet details
The bracelet is the hardest part to copy. Real links carry visible screws on the sides, sized and aligned with the link edge. The flat surfaces are satin brushed and the flanks take a light polish. Copy bracelets often use screws that are cosmetic, sit shallow, or leave a visible gap at the screw head.
How to check a replica Panthère medium
Work through these checks in order. Each step is one measurement or one look.
- Measure the case width at the bezel with a caliper. It should read 27 mm.
- Measure total thickness at the caseback. Anything past 7.5 mm sits too proud on the wrist.
- Examine the crown under a loupe. The cabochon is blue spinel with cut facets, not a flat plastic dot.
- Study the dial printing. Roman numerals should be crisp and even, with no ink bleed at the serifs.
- Locate the secret signature inside a Roman numeral and compare the letterforms to clear photos of that reference.
- Inspect the hands. The sword shape should taper to a clean point with no burr at the tip.
- Turn the watch over and read the caseback engraving. Depth and font matter more than the words.
- Watch the seconds hand for one minute. A one-step tick confirms a quartz base, while a sweep means the wrong caliber sits inside.
- Compare the bracelet weight to a published figure for that reference. Hollow or thin links feel light and rattle.
Common flaws to expect
- Caseback that adds thickness and throws off the profile
- Cabochon that reads purple, cloudy, or unpolished
- Bracelet screws that do not line up along the link edge
- Crown that does not sit flush against the case flank
- Swiss Made text at 6 o'clock printed too large or too wide
- Dial numerals with uneven spacing around the inner track
Medium versus small and large
The small Panthère measures about 22 mm by 30 mm, the medium 27 mm by 37 mm, and the large 30 mm by 40 mm. Buyers with wrists under 6 inches often find the medium too wide at the lugs, and buyers above 7 inches find it small. Because the medium is the middle size, it is also the size with the deepest supply of replicas and the widest spread in quality.
Legal note in the United States
Counterfeit goods that carry a registered trademark can be seized at import, and selling them or passing them off as genuine carries civil and criminal exposure. Buying a replica for personal wear is a different question from reselling one as real. Treat any 1:1 Panthère as a lookalike, never as an investment, and never list it for sale as an authentic Cartier.