This is the typical American style euphonium with the bell that goes to your left, but this one has a straight bell. It is a 4-valve non-compensating horn, of course. It comes with a case, which the seller says is in good condition. I see only a few small dents. This looks like a winner, and bidding starts at $500.
SOLD FOR $487
https://www.ebay.com/itm/304489771614