TubeNet

I have no affiliation with the seller, just saw this listing on the German ebay site, and the price is quite reasonable & the horn looks to be in nice condition. I don't know if the seller will ship to the U.S. The listing says europe only, but sometimes an email will get a good response, esp. since there are no bids:

http://cgi.ebay.de/ws/eBayISAPI.dll?Vie ... 3749678620