I just acquired a U87 that I've had my eye (or, should I say ear) on for a few years now. The serial number is: 37663 Can you tell me when it was manufactured and who the original purchaser was? A good friend of mine in Arizona bought it from the singer of the band Hot Tuna in 1998. We're not sure of it's history before that.
Any information is greatly appreciated.
Thank You,
Joe Mills