- Serial No. 5020 & Pure Tone Trade Mark
- Serial No. 5080
- Serial No. 5113
- Serial No. 5383
- serial no. 5398 hohner logo
- Serial No. 5631
- serial no. 5970
- Serial No. 6020
- Serial No. 6050
- Serial No. 6080 & True Tone Trade Mark Stamp
- serial no. 6503
- Serial No. 6853
- serial no. 7083
- Serial No. 7302 & Pure Tone Trade Mark