| The picture below shows a larger view of this Old Unopened Cracker Jack Pop Corn Confection Swiss Warbler Bird Call Novelty Toy Prize. The full title of this prize is: THE WONDERFUL DOUBLE THROAT OR
SWISS WARBLER BIRD CALL. This prize is not dated but it is believed to be from the 1950s. The Cracker Jack ID number for this prize is Z-0550. The bird call is not pictured but it is a half round cloth object, with a tin section, and a cellophane type material as well. This is a well known novelty item and there were a few different print variations on the envelope of this prize. It has a bird illustrated on the envelope and written instructions on how to use it. It is also marked on the other side of the envelope as follows: letter “M” in a Circle.
MADE IN JAPAN The toy prize envelope measures about 2-7/8'' x 1-7/8''. It appears to be in near mint unopened condition as pictured. There is a single vertical fold on the envelope. | 
