Literally made this account to figure this out... My grandma just recently gave me an old Fender Jazz Bass that she used to use.. She doesn't know the year on it, but her husband bought it used for her in 1982. So it's got to be older than that.... I've already taken the neck off looking for the serial but came up empty. Only thing close to a number I got was what looked like to be a roman numeral "7" on the back of the neck..... From the looks to me, it appears to be a 1960's... What do y'all think? I can't find a number anywhere.