Originally Posted by SPIDER-DAN
More than likely that is a first run proto star stamp champion boss unless it has a groove under the rim of the disc......then it is a first run proto star stamp champion groove. If the underside of the rim of the disc is flat and smooth then it is the boss and they are hard to find and worth some $$$. Be prepared to spend anywhere between $40-60 unless you get a hold of a used one.
No groove on the underside of the rim. Lost a champion groove today actually... gotta go buy one of those now. A proto Boss though huh? that anything like the Champion Boss's around now?