Just got another email back from the seller. He says he used the bass extensively on a few tours with his cover band. As of now, he has the bass on cosignment at some music store, which is trying to sell it for close to 6,000. There hasnt been any interest, and personally I dont think the people who came in and saw it relized exactly what they were beholding, (if it is in fact from 1973)
He said he has the buildsheet, and if I can verify its authenticity, along with the credibility of the insturment itself, then I am VERY excited to say that I may soon be adding a true gem to my collection!
However, only time will tell... I'll keep the forum updated as I learn more!