(Pete) Note that Saxophone.org and a couple other places advocate that the Radio Improved horns after 209xx should all be considered Jimmy Dorsey models.
I disagree with this, as an actual Jimmy Dorsey model had the left hand sheet metal keyguard and a few other differences.

I'm relatively sure that only altos and tenors were stamped "Radio Improved." I'm still going to include other pitches with the same s/n range here, just to be consistent.

  • Bb Tenor 19131 (1934) Bb Tenor 19131 (1934)
  • Bb Tenor 19386 (1934) Bb Tenor 19386 (1934)
  • Eb Alto 19176 (1934) Eb Alto 19176 (1934)
  • Eb Alto 19718 (1934) Eb Alto 19718 (1934)
  • Eb Alto 20628 (1935) Eb Alto 20628 (1935)
  • Eb Alto 24145 (1937) Eb Alto 24145 (1937)