Not easy to find discontinued Tenyo item, especially given that the top of the old style Tenyo Box is present. The bottom of the box is missing. This is an early model and the ropes have faded. From a collectible standpoint you may want to keep it that way. If you are buying this to perform than it would be very easy to redo the ropes.
You start out with a bar from which three ropes are hanging. The rope on the left has a knot in its middle. The bar goes behind the back and when it is brought back the knot is on the right. This is repeated several times and at the end there are knots on all three ropes.