Quick Answer
A fake Vacheron Constantin perpetual calendar will often have flaws in the dial text, subdial alignment, moon phase detail, and movement finishing. Check these areas with a loupe and compare to official images.
Prerequisites
- A jeweler's loupe (10x)
- Reference photos from Vacheron Constantin
- Knowledge of the specific model reference
Step-by-Step Identification
- Check the dial text. The brand name and Perpetual Calendar text should be crisp with even spacing. Fakes often use wrong fonts or misspellings.
- Inspect subdial alignment. The day, date, month, and moon phase subdials must align exactly. Misalignment is a common flaw.
- Examine the moon phase. The moon should be gold and the stars silver. Fake moon phases often look flat or use wrong colors.
- Look at the case finishing. Vacheron Constantin uses hand-polished and brushed surfaces. Fake cases have sharp edges or uneven brushing.
- Check the movement. A genuine movement has Geneva stripes, circular graining, and polished screws. Fakes use rough finishing or plastic parts.
- Verify hallmarks. The Maltese cross and 750 gold mark should have clean stamped edges. Fake stamps are shallow or off-center.
- Test the pushers. The corrector pushers should click with a firm action and reset the calendar. Fakes feel mushy or fail to advance.
Key Details to Compare
The dial of a Vacheron Constantin perpetual calendar often has a guilloché pattern. Fakes may use printed patterns. The applied gold markers should have polished edges. The case back should have correct engravings. The serial number should match the movement. The weight of a solid gold watch is heavier than a fake with a plated base metal case.
For a definitive answer, have a qualified watchmaker open the case and inspect the movement. They can verify the caliber number and finishing. Always request original papers and box when buying. A genuine perpetual calendar comes with a certificate and a unique reference number.