Hi- I have a 1990 Warwick Thumb bass, 4 string, fretless, neck through (not a bolt on). I have never seen one for sale anywhere so I am not sure of it's value. I have found every combination of styles but this one. I have it up for sale (at the ususal place) because I didn't know for sure how to price it... but I'd much rather sell it directly. If you are interested and can help me out with evidence of similar sales, we could come to an agreement on price. Somewhere between 1500 and 2000. Thanks. I'll post pictures some pictures later today.