Hi everyone, hope you all rocking n rollin! I've just bought an SG, probably 1973 but could be 72-76? Unfortunately the serial number is missing, and the pots look to have been changed, but all the other details look right to me- solid mahogany body, unbound ebony fretboard, narrow neck at the top, tarback humbuckers, most of the original wiring with part silver lined cavity, thick heal to top of neck. It came in a case but it looks too new to be original, with the Gibson USA logo on it- I would have expected just white Gibson. Any thoughts on its authenticity? Cheers.