I suspect it is the same style of wall mount as you see here and I have seen often in Germany and Austria. Looks like this guy does the skulls, not taxidermy on the whole head though. Interesting! I'd rather have the whole head, I think! A skull is.....a little weird for my tastes!
@happypat@365projectorgheatherb To answer your question about this business... They tan animal hides and also do taxidermy mounts of animal heads for hunters.