I get what you mean now.I have an old big bead aviar that is marked aviar driver on the bottom. So I've always viewed the old big bead as the aviar driver.
Those old ink stamps? I'd have to go look at an old Aviar with a custom stamp and see if it says "driver." There was some marketing back in the 90's of the Aviar that said the big bead was for drives and the small bead was for putting, but the actual grid stamp never said "Driver" on it so I never called it that. I do remember consciously knowing I used them backwards because I drove with small beads and putted with big beads. They definitely did market the big bead as a driver, though.