This looks like a terrific example of this model. It is satin silver with gold wash inside the bell. Valves look good, but show signs of sitting around for a long time. Hard case is included. A horn like this might solve the problem of sitting in the back of the band and having trouble projection to the audience with the upward-facing bell, which may be pointed at curtains and lights about the stage. The serial number looks like 1973, and because it comes with a mouthpiece adapter I assume this is the coveted medium-bore. Current bid is $281.65 (reserve not met) with a reasonable $50 shipping charge. Seller has a 100% positive rating.
SOLD FOR $750 - GREAT BUY!
http://www.ebay.com/itm/Near-Mint-1973-BESSON-COMPENSATING-3-VALVE-EUPHONIUM-/232289950414