There is a 1995 in reportedly excellent condition listed on Gbase for $3,500. Of course, that is a retail price, generally more than a private seller would get.
https://www.gbase.com/gear/guild-gui...0-natural-1995
The listing says production ended in 1997. Based on the serial number of yours, I'm guessing the model was re-introduced at some point. Have you contacted Guild for dating info?