Yep, they were somewhat common. Like some sort of German hunting lodge set. Good steel though. I remember when I was a kid you could get a solingen steel knife for around ten dollars or less. They were imported, and did not make too much of a fuss, among knife people, but everyone that I knew that had one kept it!
I have an old one I picked up at a garage sale. Stag handle. But the deer foot ones also came just by itself, without the fork, I have seen them, when I was a teen ager, in a sheath. I had a set, of stag handle knifes, one was a large somewhat bowie style, with a small skinner on the same sheath, for the bigger knife. plus a sharpening stone. Again great steel. Each of them would shave you. I once bought a knife for five dollars, at a little grocery store, on the street where I used to live west of Lake Worth, Florida, and it had plastic simulated black bone handles scales. BUT,..... the blade was Solingen, and it too would shave you. Too bad those days are gone. I have also seen similar knives with the deer foot handle, advertised, from Poland, and checklosvakia, I believe. But you will have a good knife, once you replace the handle, and finger guard.
Too bad he didn't have the set, and you didn't get on here before cleaning it up......
$2,000.00 for an old set huh? Dang!
I am going to have to start checking the flea markets again......
Wayne