Info above is accurate... Anything after 2044 was not built by the original team. There were 60 or so basses first built in Nashville that weren't even numbered, and thereafter they began manufacture, with Michael only consulting. To me, $3K for a Gibson-era Tobias seems a bit high, but I'm not an expert on prices. I have a four string and I paid far less than that for a 86' pre-Gibson, (serial #524.) It may very well be a great bass... very hard to tell from the pictures

. But if part of what you're looking for is that Tobias "magic" and an investment that will keep value over time, maybe look for one in the TB classifieds, as they do come up from time to time.