The Flintstones

The Treasure of Sierra Madrock (6x19)

Air date: Feb 11, 1966

Two con artists posing as gold miners sell Fred and Barney phony mine. Wilma and Betty find out and trick the con artists into buying the mine back, but Fred and Barney, convinced of its value, won't sell. Only the threats of the con men convince them to recover their investment and head back home.