This steel yo-yo was made by the Cayo Manufacturing Company of Benton Harbor Michigan in the early 1930s. There is a "Captain's Wheel" lithograph pattern design printed on one side in gray, white and black. Julius N. Cayo founded the Cayo Manufacturing Company as a metal stamping business and began making yo-yos in the early 1930s. It was called a Musical Ka-Yo, so not to infringe upon the Duncan Toy Company's trademark of the term "yo-yo." It whistled when spun due to holes in its sides.
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