Your best bet would be to check out "junk shops" and Antique shops.
When I lived near Richmond, Virginia they sold for about $22-$35.00 each
And that was about 10-15 years ago.
Here in West Virginia, people still can with them,
But they're family "hand - me - downs" and they wouldn't part with them!
Not even for a new set of dentures! :)) LOL