The picture below shows larger top and bottom views of this Colorful Old Cracker Jack Pop Corn Confection Lithographed TinToyPrize Bird Whistle. The whistle is not dated but it is believed to be from the 1950s. It is not marked and the maker is unknown. The prizewhistle measures about 1'' x 1-3/16'' x 1/4''. It appears to be in excellent condition as pictured.