| Maker | F.C. Böttcher, Hamburg (18??-18??) |
| Dated/City | c.1840 / Hamburg |
| Key/Pitch (MHz) | Iwan Muller 12-key System Clarinet in Eb |
| Descriptions | Boxwood, Ivory ferrules, Original grenadilla wood mouthpiece, Twelve brass keys with salt spoon key covers; springs attached to keys mounted in saddles |
| Full Marking | ” F.C. Böttcher / Hamburg / Es ” : upper joint and lower joint |
| Additional Marking | ” F.C. Böttcher / Hamburg / Es ” : barrel and bell |
| Length | 596 mm. / 534 mm. (without mouthpiece) |
| Note: |
