Miraphone 47 WL 1100 Tenor Horn, wide, 3 valves, Bb tenor horn, wide, 3 valves, model Loimayr ( Bb-47WL ), Bell diameter: 270 mm (10,63 inch) rotary valves, model Loimayr, bore of valve section: 13,9 mm (0,547 inch) combined goldbrass-nickel silver valve section, spiral spring system, Miraphone-Minibal-rod, Material of mouthpipe: goldbrass, Mouthpiece: TH10