We are not musical instrument experts. Below is the best description we derived form quick google search on this item.
Case - The case appears to be made out of leather and is in relatively poor condition. Missing top/bottom.
The clarinet is made out of wood. Multiple keypads are missing and are covered in patina. No reed/ligature. Tenons are loose between Upper/Lower joint and show no waxed thread. The other tenons are not snug either and would need maintenance as well.
Based on limited research instrument seems to be produced in Vienna (Wien), Austria by Leopold Uhlmann and or his sons as pieces are engraved "L. Uhlmann & Sohn | Wien" on them. Not sure on the age.
Selling as is. - for restoration
Please contact us if additional photos are needed/desired.