Hey everyone! I'm considering buying a J-50. The seller is thinking it's a 1970 but he's not really sure. From my research, I think it might possibly be a 68 but then I read other posts on other forums that say it can't be a 68, it has to be a 69 or later. The serial number is 912305. And there is no made in USA stamp underneath it. According to guitarhq.com, because there is no made in usa stamp, this serial number says it's a 68. The same site also says that a 64-69 would use Kluson Deluxe double line tunes. Which this guitar has. I've read that the J-50 switched from rounded shoulder shape to the square shoulder shape in 69. If that's true, it would rule this out from being a 68. The seller is also asking $1500 which I think is a lot for a 1970 in this condition.
Any help would be greatly appreciated