Very good condition, no instructions.
The Tumbling Blocks. Holland: Eddy Taytelbaum, 1970s. A Jacob’s Ladder-style pocket trick allows the performer to change the surface’s color to black, white with red spots, or white with green spots. 1 x 1 ¼” square folded; 4 1/2 x 1 1/8 x ¼” open.







