Without even looking at a picture I would expect 100% of Japanese
Trade dollars I see to be fake.
It is up to you to convince me it is genuine.
Start with:
Is it magnetic?
What is its diameter in mm and weight in grams?
How did you acquire it?
Really I would only believe it genuine if you or the person you acquired it from had a track history of dealing in genuine high value Asian coins. Given your other threads with counterfeit Chinese silver coins and tempo tsuho, I don't think that's likely.
Like I said, that's without even looking at a picture.
Again, look at the dentils around the edge and the beads around the dragon. The beads aren't too bad but I don't like the look of the dentils. Also the concentric line in the rim on the tip of the obverse picture.
Others more familiar with this type may point out other signs of forgery that I miss, like issues with the letters or calligraphy.
The reason I'm unfamiliar with this type is that they are out of my price range.
Genuine ones easily sell for $500+.
How much did you pay for yours?