Standard Series, Key: Eb, Material: Yellow brass, Top action valves: 3 pistons, Bell: 386mm (15-1/4"), Bore: 17.5mm (0.689"), Finish: Silver-plated
Standard Series, Key: Eb, Material: Yellow brass, Top action valves: 3 pistons, Bell: 386mm (15-1/4"), Bore: 17.5mm (0.689"), Finish: Silver-plated