The SG came from Japan. No serial but it's probably mid-to-late 80's. Could be as late as the 90's, but the VH-1s and electronics look like 80's. It's got the fattest neck of any of my Burnys.
I've got some extras, and I have a pickup endorsement deal, so I expect I'll be swapping out more of them. If I decide to sell a pair I'll contact you first.