As a Granstar expert, I'll jump in. They certianly look like Granstars (though they could be Crestars as well since both lines were basically the same drums. The lugs were identical). Granstar II lugs went the length of shell like the Artstars but were introduced in the late 80's.I think they're Granstars. That was the era when Tama started changing things, so I'm going to guess those. I think the Artstar lugs went the length of the shell.