Loudspeaker is constructed using a single silver plated saxophone key that we have manipulated and added to with brass, sterling silver, celluloid, vinyl LP, bone chess piece, epoxy resin. and green onyx. All skillfully fabricated, silver soldered, cold joined, and cast. Logo stamped on back of brass dish. Stainless steel pin stem with pass through for a chain (not included). 2.75" tall.