"Curved" Wire Keyguards
"Y" Shaped Octave Mechanism
Buescher-like G#/C#/B/Bb Cluster
  • Bb Tenor 15057 (ca. 1907) Bb Tenor 15057 (ca. 1907)
  • Bb Tenor 15xxx Bb Tenor 15xxx
  • Bb Tenor 18169 Bb Tenor 18169
  • C Tenor 14823 (1906) C Tenor 14823 (1906)
  • C Tenor 150xxx C Tenor 150xxx
  • Eb Alto (Low B) 15124 Eb Alto (Low B) 15124