| Maker | Francois Verhasselt (1813-1853) |
| Dated/City | c.1840-50 / Brussels |
| Key/Pitch (MHz) | 13 keys Clarinet in A |
| Descriptions | Boxwood, Ivory ferrules, Original grenadilla wood mouthpiece, Thirteen German Silver keys with salt spoon key covers; springs attached to keys mounted in pillars. |
| Full Marking | ” A / (in oval cartouche) F.VERHASSELT / . BRUXELLES . ” : barrel, upper joint, and bell |
| Additional Marking | ” (in oval cartouche) F.VERHASSELT / . BRUXELLES . ” – one piece lower joint |
| Length | 687 mm. / 615 mm. (without mouthpiece) |
| Note: |