The pictures below show larger front and back views of this 1920s Cracker Jack Pop Corn Confection Lithographed Tin Circus Clown Airplane Whistle Toy Prize. This prize whistle is in the shape of an early aeroplane. It has a colorful lithograph design of a circus clown with rings. The Cracker Jack ID number for this prize was Z-0137 and they were manufactured by a company named Cosmo. From this same diecut and folds there were at least several other different designs. The lithographed tin airplane whistle measures about 2'' x 1-5/8'' x 1/4''. It appears to be in excellent working condition with some wear as pictured.