TubeNet

http://www.ebay.com/itm/Very-old-rotary ... Swo6lWFmA5" target="_blank

"Valves move fast" "3 out of 5 slides work"

What is the risk? Is the price too high?

This seller seems to be honest. The problem with buying horns of this age is that the seams in the tubes will often split during dent removal. There may also be some 'brickly-ness' of the brass. Sometimes these horns are a real challenge to repair.

The seller is trying to explain some of the hazards in the description.