Short answer
"Fake Omega 3522" covers two things. First, a watch advertised as holding Omega calibre 3522 that holds a different movement. Second, a counterfeit of an Omega reference number that contains 3522, such as 3522.50. The calibre itself is not fake. The fake is the watch, the engraving, or the paperwork around it.
What calibre 3522 is
Omega 3522 is an automatic movement from the 1990s. Omega built it on the ETA 2892-2 base. The 3522 is the chronometer version, adjusted to COSC limits at the factory. Published specs list 28,800 vibrations per hour, 25 jewels, and about 44 hours of power reserve. Omega used the calibre in Constellation and Seamaster dress models of that period.
Omega's public movement archive is thin on the 3522. Jewel counts and finish details in forum posts do not agree. Treat single-source numbers with care.
Where fakes show up
Three swaps are common.
- A plain ETA 2892-A2. Same base, no chronometer adjustment. Rate sits outside the -4/+6 second window.
- A Sellita SW300-1. Same design lineage. The rotor and bridges carry Sellita marks.
- A Chinese clone, such as a Seagull ST18 or a Hangzhou 6300. Jewel counts run from 21 to 25. Bridge shapes differ.
All three keep the watch running. That is why the swap survives a photo sale.
Check points
- Rotor engraving. Genuine rotors carry the Omega symbol and the number 3522 with correct letter spacing. Copies use softer lines.
- Finish under a loupe. Omega applied Geneva stripes and a set balance cock shape.
- Rate on a timegrapher. COSC spec is -4/+6 seconds per day in five positions at 23 C across 15 days. A swapped movement fails this in most positions.
- Caseback reference. Compare the full reference, including the two digits after the dot, against Omega records.
- Papers and box. Serial numbers on the card, the case, and the rotor should match.
Price signal
A genuine Constellation with calibre 3522 trades in the low four figures in US dollars, based on condition and box set. An asking price under $500 for a watch described as chronometer certified and boxed points to a parts build or a swap.
Reference number confusion
Some sellers write 3522 when they mean an Omega reference, not a calibre. Ask for a movement photo, a caseback photo, and the serial. A seller who refuses all three has answered the question.
What photos cannot prove
A photo shows the rotor and the plates. It does not show the rate, the amplitude, or the service history. A movement can look correct and run at -20 seconds per day. Rate data needs a timegrapher and a watchmaker.