Most wood clarinets are made of African Blackwood..Dalbergia nigra, which is a cousin in the Rosewood family. It is a fairly stable wood and highly prized for flutes, clarinets and other woodwinds...unlike Ebony, Diospyros spp., which is much harder to season and control cracking.

I think you have a nice find, Lynne, whether you ever play them or not. If they are intact and not damaged, they can most likely be restored and well worth having.

Have fun experimenting!