Right after the Modell 1929 and right before the model with the "VKS" keyguards.

(Pete) There are at least four versions of these horns: Popular, Star, Highclass, and Regent.
From my current reading, there may also be a "de Luxe" and "Excelsior."
I have really no way of telling these horns apart: let's call the "Popular" the horn without a D# trill.
Here's one that has it.
Let's call the "Highclass" the horn that has the additional pearls.
Oops. This Popular model has them.

(Helen) According to research materials gathered by Uwe Ladwig, the Popular, Star, and Unser feinstes ("Our Finest") Modell, were available in the 1930s for an additional cost as "Super-Variante" (super variants).

  • Bb Tenor - Silver Plate Bb Tenor - Silver Plate
  • Bb Tenor - sn 239926 - 1931 - Relacquer Bb Tenor - sn 239926 - 1931 - Relacquer
  • Bb Tenor - sn 239945 - 1931 - Silver Plate - Popular Model Bb Tenor - sn 239945 - 1931 - Silver Plate - Popular Model
  • Bb Tenor - sn 240077 - 1932 - Nickel Plate Bb Tenor - sn 240077 - 1932 - Nickel Plate
  • Bb Tenor - sn 240132 - 1932 - Silver Plate Bb Tenor - sn 240132 - 1932 - Silver Plate
  • Bb Tenor - sn 245616 (1933) - Nickel Plate - From rechtschreibfeler @ ebay.com - Star Model - $546 in 2015 Bb Tenor - sn 245616 (1933) - Nickel Plate - From rechtschreibfeler @ ebay.com  - Star Model -  $546 in 2015
  • High Class Model - 239238 High Class Model - 239238
  • Kohlert (1930) Kohlert (1930)