Hi guys, I know someone who may be willing to sell this bass. They don't have any info on the instrument and the seller inherited it from a family member. Would anyone be able to help me identify the year and/or fair price? I initially thought 70's because of the block inlays and truss rod Allen wrench adjustment at the headstock but I noticed that the serial number says "s/n B001240". I've never seen any 70's bass that begins with a letter. As far as I know, the usually start with S and then the second digit of the year it was produced (S7 = 77'). I think it may be a replacement neck on a separate body (not from the factory) but, if that's the case, I can't really tell how old the body might be. Please help!