Jagdroach

Met a guy who is selling some Mazdaspeed MS-01c rims for a pretty reasonable price. He says they are legit with the serial numbers and the competition stickers are still on the wheels. All the center caps are there too.

I don't know a ton about these wheels so I was wondering if there is a way to confirm that they are not knock offs? Or is there is anything else I should look out for when I go to check them out?

Thanks