Just curious if SG guitars differed from basses. The slot head basses appeared from 70-72 without a volute, 3 piece mahogany. The volute didn't appear until 72 on EB-0/3s solid headstocks and maple necks I just read on here someone mentioned the volute appearing in 70 for guitars. I have a slot head bass with a volute and 3pc mahogany neck. I'm trying to determine if it was an early 70 or late 71. I'm guessing 71 on the chance this was a transition guitar, but that can also mean early 70 transition, though I have no idea why Gibson wouldn't produce a slot head with volute in bigger numbers since I assume it was to help the weak neck. Of course it didn't work, but the headstock breaks did become nicer looking. Serial number is inconclusive. See my other thread for pics of the husk and link to more info. I'll probably never know for sure, but either way I have a rarity. A link to a reputable source would be nice.