| Maker | Wilhelm Hess (1800-1874) |
| Dated/City | c.1840 / München |
| Key/Pitch (MHz) | 11 keys Clarinet in C |
| Descriptions | Boxwood, Horn ferrules, Brass keys with flat round key covers; springs attached to keys mounted in blocks and pillar, horn thumb rest |
| Full Marking | ” W. Hess / München / # ” : upper joint |
| Additional Marking | |
| Length | mm. |
| Note: |
