used to have a couple .40 rim fire found inside the wall of my childhood home in dot, don't know what i did with them, looks like you may have 1 in that collection
Probably not much value other than the "Cool!" factor. If you really want to move them, take them to a gun show, and see who's selling such oddities. See if they'll make you an offer.
The other option is to gather a hard, flat surface, a brick or hammer, and a video recorder.*
So ammo collectors are all about the colorful cardboard boxes
and don't actually care about the ammo inside?
P. S. If you auction them off on-line,
arrange them for photos on the rim of a pedestal sink.