Re: Help identify and value my 1990 Universe!
Agree with the above posters that this is a mutt. How it came to be or where the parts came from I have no idea.
Regardless, the "low" serial number is not a perfect indicator of what bridge a first year UV will have.
Also, since this is a mutt, who knows where that neck plate came from so...
As to the value question:
If you need a value for insurance purposes, contact a custom builder and find out how much it would cost to have a replacement made.
If you need a value for sale purposes, just try and sell it. "It's worth what someone is willing to pay for it" is the prevailing axiom IMO.