Diatonic Tremolo-Harmonica only in G, 2x20 notes, wooden comb, reedplates fitted with screws.

We needed a long time to decide, whether this is a Octave harmonica (it's not because it's not tuned in octaves) or it's a tremolo (it's not because there is not the same note doubled in the same channel).

Anyways, the intervals are a bit detuned, so we have a nice waving tremolo
sound.
Because of the sound, the instrument here could be named a Tremolo.

The note concept has been built by Seydel since 1920.
On blow the G major chord sounds (tonic) and on draw you get a chord similar to D-major, more or less the dominant chord.

The harmonica has a loud sound and lets the player blow very interesting, new sounding lines "automatically".