- Max Keilwerth Pure Tone President Certificate 2
- Max Keilwerth Pure Tone President Certificate 1
- MK President, Hohner 26XX, & Hohner 131XX
- Neck-Left-Side
- Neck-Right-Side
- Right-Side
- Stamp-A-49
- Bell-Engraving
- Left-Pinkie-Cluster
- M.K President & Hohner President 26XX Right Side
- M.K.-President-&-Hohner-26X
- M.K.-President-&-Hohner-Pre
- Left Hand & Palm Keys
- Left Palm Keys