Ophiclee or outpholene (old spelling): copper wind instrument with 9 valves. Copper wind instrument, a kind of tuba but then with the cup forward consisting of two parts. Two valves and the
Trumpet Valves (And How They Work) - Trumpet Heroes
Lovermusic Nickel Plated Valve Finger Buttons for Euphonium/Tuba Replacement Parts and Repairing Kit Set of 3 : Buy Online at Best Price in KSA - Souq is now Amazon.sa: Musical Instruments