ok, the pix you posted up is the 1990 reissue Super Valk that bandai released which goes from 100 to 200 depending on who wants it badly enough to pay that much for it. Then there's the takatoku super valk that was released in the 80's, this one:
Then in 2002, bandai went ahead and reissued the takatoku version of the super valk, this one:
so those are the other two you have to worry about. There is a bootleg of the 1990 reissue but you can easily tell by the valk inside. The valk they used for the bootleg is actually the strike valk, the vf-1s with red highlights. and blue super armor. I can't find a pix of it, but it's been posted a few times here on the boards. But anyway, you won't be able to find that bootleg easily anyway, it's old and pretty hard to find. Anyway, good luck in your search