Short Answer
A "fake pilots automatic 46" is a replica of a 46 mm pilot style automatic watch, a format defined by a large legible dial, a fluted or conical crown, and a soft iron or antimagnetic inner cage on the original. The honest version of this answer: the case diameter is the easy part to copy, and the movement, crystal coating, and dial printing are where most replicas fall apart. Buy the copy that gets the case proportions and the winding feel right, not the one with the loudest photos.
Prerequisites
- The genuine reference numbers and their measured case sizes, so you can compare against real numbers instead of seller claims.
- A digital caliper, accurate to 0.1 mm.
- A loupe or a phone macro lens.
- A kitchen scale for weight comparison.
- Thirty minutes to run a rate check over a few hours.
How to Evaluate One
- Measure the case across the bezel at 3 and 9 o'clock. A true 46 mm pilot case reads 46.0 to 46.3 mm. Copies that read 45.1 mm are using a smaller blank and padding the listing.
- Measure thickness at the crown side. Pilot automatics with a soft iron cage run thick, usually 15 mm and up. A 12 mm thick copy has no cage and no antimagnetic claim worth trusting.
- Check lug width. Most 46 mm pilot cases take a 22 mm strap. If the lugs measure 20 mm, the case is a generic part, not a pilot case.
- Open the caseback or ask for a movement photo. Look for a named caliber with a visible rotor engraving. Unmarked gray movements are the number one reason a copy runs fast after two months.
- Test the crown. A pilot crown is large and should turn with light resistance through all three positions. Gritty or loose winding means a cheap stem and tube.
- Inspect dial printing under magnification. Edges of numerals should be crisp with no ink bleed. Lume plots should sit level in their recesses.
- Check the crystal. Look for a blue or purple color cast at an angle. Good anti reflective coating shows almost no reflection from the front.
- Run the watch for 24 hours against a known time source and log the deviation. Anything beyond about 15 seconds per day needs regulation or a return.
Common Tells of a Weak Copy
- Date window sitting off center or cut with a rounded corner.
- Caseback engraving that is shallow or double struck.
- Hands that are too short relative to the dial, a giveaway on oversized pilot dials.
- A crown that sits flush against the case instead of clearing it.
- Weight under about 90 grams on a steel bracelet, which points to a hollow or thin case.
Water Resistance Reality
Treat any replica pilot automatic 46 as splash resistant only. Gaskets on copies are often dry fitted and untested, and a 46 mm case with a large crown has more entry points than a standard dress watch. Do not swim or shower with it, and have a watchmaker pressure test it if water contact matters to you.
What to Pay For
Spend on the movement and the crystal, not the box. A well regulated clone or a genuine third party Swiss automatic paired with a properly coated sapphire crystal will outperform a fancy presentation case every time. Ask the seller for a movement photo and a rate reading before you commit, and walk away from any listing that refuses both.