- Lyre Screw & Floating Lever
- M.K President & Hohner President 26XX Right Side
- M.K.-President-&-Hohner-26X
- M.K.-President-&-Hohner-Pre
- matching serial no. on neck
- matching serial no. on neck
- matching-serial-no
- Max Keilwerth Pure Tone President Certificate 1
- Max Keilwerth Pure Tone President Certificate 2
- meinel and herrold max keilwerth stencil 5493
- Microtuner
- Microtuner
- Microtuner with Mouthpiece Attached
- Microtuner-&-Mouthpiece