DIE-A-BOLITRIK The 21st Century Die Box

Don Potts DIE-A-BOLITRIK The 21st Century Die Box in good condition from the inventor of the classic UF Grant Mystery of The Pyramids (upside down checkers), comes this very unique die box type effect, sub-titled "The 21st Century Die Box". A solid red block is placed into the blue box with 2 front windows. It is seen to slide back and forth until the doors drop open and the block visibly vanishes! It reappears in a smaller box which was previously shown empty. Very Hard to find. Include original instructions.