George- I just enlarged Flick's photo and you may be right based on the original imprint shape and screw holes. So this guitar has had at least 3 sets of tuners on it over the years (Klusons, then Grovers, and lastly the Schallers like the ones Gibson put on the reissues)...
hmmm, makes me think the other gold hardware may not be original... somebody(ies) liked to tinker with this guitar. Seems that the tuner changed at least once under Gary... wonder if he was maybe more of a gearhead than I thought... you know, always searching for "that perfect setup"