This is the well-reviewed Shires compensating euphonium, with the nice hard case. Very fine condition except for a round dent on the bottom bow (in photo below with a stick-on arrow to point it out). If I were looking for this model I would consider this seriously and plan on leaving the dent as is. Because it involved the bottom bow cap it would not be a simple fix, and it should not affect the playing qualities at all. Buy-it-now for $3,900 (or make an offer):
ITEM SOLD FOR $3,600
https://www.ebay.com/itm/265515494739