Where are you located in Texas ?? I am in NE part !! My suggestion would be to consign it to a good quality auction house possibly in the Austin, Houston, Dallas Ft. Worth area !! That's where your buyers would be !!
As to its worth,,My personal opinion would be somewhere between $5000. and $8000. depending on who is at the sale and how it is advertised !! Most quality auction houses do a pretty good job and they know their buyers !!