First, second, and third place award patches for Duncan Yo-Yo Contests, likely from the 1950s or 1960s. To my knowledge, this set is the only round first, second, and third place award patches that Duncan ever made. Each patch is about the size of a U.S. silver dollar.
Hard-to-find.
The back of the first and second place patches have dried glue residue from the previous owner gluing them onto something else.