This bank was made in Japan, right after World War ll, during the occupation, around 1948. It is a further manifestation of a mid to early 19th century tradition of hiding documents and money in boxes with "tricks" and a multiplicity of "moves" to unlock a box or trunk.
The YOT puzzle is a shiny metal disc that comes with a real US silver dollar. The challenge is to open the YOT and remove the coin without power tools. Comes in original box with paper.