Interesting this Euphonium is listed on the Trombone Forum and Tubenet but not here. Although many classics are not as "point and shoot" as the Adams is said to be, this sounds like a beautiful well maintained instrument. Someone is in for a treat if they have 4K ready to go. The price sounds decent.
Bob Tampa FL USA
Euph -- 1984 B&H Round Stamp Sovereign 967 / 1978 Besson NS 767 / Early 90s Sterling MP: 4AL and GW Carbonaria
Tuba -- 2014 Wisemann 900 CC / 2013 Mack 410 MP: Blokepiece Symphony American Shank and 33.2 #2 Rim