Short answer
A fake 5405BR is a replica of the 5405BR reference, and the reference letters point to a gold or bicolor case on the brands that use that coding. You cannot judge one from a listing photo. A replica earns its price only if it copies four things: case profile, dial print, date window position, and movement architecture. Everything else, from the box to the papers, is packaging.
Before you start
- Sharp photos of the front, caseback, crown side, and clasp.
- The movement name, the beat rate, and a photo of the movement.
- Stated case diameter, thickness, lug width, and weight.
- A written return window of at least seven days.
What separates a good replica from a bad one
Gold-cased references are the hardest to fake. Solid gold has a heft and a warm tone that plated brass and plated steel do not match. That means weight and color are your first filters, not the last. The second filter is the case profile: the lugs, the bezel curve, and the case flank all need to match the original geometry. A case that is half a millimeter too thick reads as a fake on the wrist long before anyone reads the dial.
Inspection steps
- Measure the case diameter and thickness with calipers and compare both numbers to the published original specs.
- Weigh the watch on a kitchen scale accurate to one gram and compare that figure to the weight of the genuine gold version.
- Hold the case under daylight, not store lighting, and check that the gold tone stays warm instead of turning yellow or pink.
- Look at the dial print through a 10x loupe and confirm the brand name, the reference, and the scale text sit at the right height with crisp edges.
- Check the date window: the aperture should sit square to the dial, the frame should be even on all four sides, and the numeral should center without a gap.
- Set the hands to 12 and confirm they line up with each other and with the hour markers.
- Pull the crown to each position, cycle the date, and turn the hands forward for a full 24 hours while listening for grinding.
- Study the caseback engraving depth and font against a reference photo, then check that the caseback threads engage without wobble.
- Flex the bracelet or strap and confirm the end links sit flush against the case with no daylight gap.
Red flags
- Gold that looks bright orange in photos, which usually means thick plating over brass.
- A seller who refuses a movement photo or a weight figure.
- Dial text that thickens in the middle of a letter.
- A date window with a slanted frame or an off-center numeral.
- Case thickness more than 0.5 mm off the original figure.
- Water resistance claims with no stated standard behind them.
Questions to ask the seller
- Which movement is inside, and what is the beat rate?
- Is the case solid gold, gold plated, or gold wrapped?
- What is the actual measured weight and thickness?
- What happens if the watch arrives with a misaligned date or a scratched crystal?
Legal reality
Counterfeit watches are illegal to import and sell in the United States, and shipments get seized at the border. The FTC treats counterfeit goods as a consumer fraud problem, and U.S. Customs and Border Protection seizes counterfeit merchandise on entry. Replicas that carry a protected brand name sit in that same category, so treat any purchase as a risk you accept on your own. If a watch is sold as a genuine 5405BR but arrives as a replica, that is fraud regardless of the price you paid.