The original Clarke, King, and Jimmy Johnson models had the stickers under the finish. The standard neck sizes were different on the early models, 1.75 x 2.25 (nut x 24th fret), aka "standard taper." Now we use the "narrow taper" on the Clarke models, 1.5 x 2.15. That's the major differences. There is a slgiht dip in volume when the pan control is at the detent on the early ones, but the electronics can be upgraded.