| The picture below shows a larger view of this Unopened 1930s Cracker Jack Pop Corn Confection Sex Detector Toy Prize. The front of the envelope shows the Sex Detector in action. Inside there is a metal part and a string. The envelope is marked as follows: THE SEX DETECTOR
INSTANTLY INDICATES THE SEX OF HUMANS, ANIMALS, OR INSECTS
CIRCULAR MOTION FOR FEMALE
FORWARD AND BACKWARD MALE
WONDERFUL FUN MAKER
A SCIENTIFIC INSTRUMENT
BETTER THAN THE OUIJA BOARD
JAPAN The Cracker Jack ID number for this prize is Z-0810. It was made in Japan but the maker is unknown. The envelope measures about 3'' x 2''. It appears to be in excellent unopened condition as pictured. | 
