Horn Details
Make Buescher Price/Date  
Model Custom Built
Finish Bare Brass
Pitch Eb Baritone Keyed Range Low Bb to altissimo F
Serial 274749 Bell Keys Left
Year 1936 Tone Holes Drawn; Straight
Source Link verdimusic on eBay Octave Key Over

See also the SOTW discussions on this horn HERE and HERE.