Nobody knows the exact model w/o picture. We can guess by shape / engine mount if had pic... Once it's confirmed, it's quite straight forward cuz there's answer(s) in old thread... Barrel height is a simple way to determinate it's a 200 or 250 <the # of fin often are different> w/o complete tearing...
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The model stamped maybe complete fake. Pre-06 warring state period b4 crackdown had dark history. Stamp the
legal info on some
ghost machine often heard... Anyway Chinese are famous for not play by rules
https://en.wikipedia.org/wiki/Paper_sons is just 1 of it that heard by round eyes...