Wanted: Wilson 2975 (or Canadian Brass model)
This eBay listing ended 3/13/11 and the horn sold for $4550. The store that listed it (BAC Horn Doctor) also had another (which I bought), but they may have others. Apparently, they had a quite a few of them; they also sold one on eBay last November. It's worth a shot.
By the way, I had much success with them. The owner, Mike, worked with me and shipped the horn very quickly.
Adams E1 0.6 SS gold satin lacquer
Wessex EP100-S Dolce euphonium
Yamaha YBH-621 baritone
Yamaha YSL-354V valve trombone
Olds Recording valve trombone
Conn 1957 valve trombone (once owned by Bob Brookmeyer)
Willson 2975 euphonium
"Walk to the beat of your own tuba." Dove chocolate wrapper