i know of one setting in a tavern about 8 miles from sauk prairie trap & skeet club prairie du sac, wi. could not beleive it when i walked into the place and he had on a shelf behind the bar. said it came from a guys dad that had it in the attic after he passed away. later the guy came in with a original glass ball. thats been about 2 months ago i do not know if he would sell it, razor
There was a ball thrower on a table at the Baltimore Antique Gun Show last March and one sold in a PA gun auction last year also. They are out there. I think a good one can be made from an automotive leaf spring, but I guess that wouldn't be a real antique.