Amazing Insight 16 Cards

Price: USD9.99

Have someone pick a number from 1 to 16 and these amazing alder wood cards will quickly determine the number. The secrets of these long lost cards were found in a 1942 book by Maurice Kraitchik called Mathematical Recreations. They are also called window cards and have a fun magical edge to them. Each card is 1.3' x 4' x 1/8' thick alder wood with the numbers and text deeply laser engraved.