This is a 1931 King Giant Sousaphone. The name of this really says it all. It weights about 30lbs, has a 28" bell diameter, and is pitched in BBb. The overall condition of this instrument is very good. Valves are original, and with some La Tromba T1 oil seal great. The gold wash is slightly worn in bell flair, and it does show signs of use. Truly a rare giant! Serial number is 134509.