Vintage Cassini See through Block Vanish

You show a solid block by pounding it on table tossing or tossing in  the air. It is solid.  You then display a box with closed doors and raise the top and insert the block into the box and close the lid.  You then insert a wand completely through the box though holes in booth sides and a silk comes out the end on the tip of the wand. You teh remove one of the front panels and show the box empty.  You then tip the box to show the other side empty and it is but hey the panel is sliding with it hiding the block  block from view.  After some of the usual die box type banter you eventually let the panel slide completely out of the end of the box and the box can be seen complexly through. The block has vanished and can be reproduced elsewhere.

A scarce attractive vintage effect in used but good condition. Made of wood and plexiglass. With instructions. Circa 1970’s.

Estimate $300-500