Technical description: Red varnished maple or cocus with german silver ferrules and keywork. Five pieces: mouthpiece, curved metal crook, upper section, lower section and bell. Original mouthpiece, german model, grooved for cord with 24 grooves. Upper section: Plate on thumb-hole, because it is too wide to be covered by the thumb. Twin hole for speaker key and one vent key for a better intonation of throat B?. Two throat A? keys to offer the player the English fingering (L2) or the Continental (L1). Additional side key for E?4/B?5. Plate for L3, because the tone-hole is to wide to be covered by the third finger. Plate on R1, because the tone-hole is too far away from R2. Patent C sharp; chromatic extension keys on R0 with open-standing C and D, closed-standing D? and C?. Black plastic rollers on L4/R4 touchpieces. Thumb rest and extension keys with green felt. L0: Plate; speaker corresponding with first ring. L1: T + ring + vent; throat A?; throat A?. L2: T + ring + vent; long tailed throat A?; additional cross key for F4/C6. L3: Plate; cross E?4/B?5. L4: C?4/G?5; E3/B?4; F?3/C?5. R0: C3; C?3; D3; D?3. R1: Plate; side F4/C6; side E?4/B?5; side trill for throat A-B? and B?-C; additional touchpiece for C?4/G?5. R2: T + spectacle. R3: T + spectacle; B?3/F?5; side B?3/F?5. R4: F3/C5; G?3/E?5. Keymount type: pillars. Keyhead type: modern. Repair History: The duplicate lever for E?/B? seems to be a replacement.