Cayo
From YoYo Wiki
The Cayo Manufacturing Company was another US manufacturer in the golden age of yo-yos, the 1930's to 1940's. Not much is currently know about the company, apart from the fact that they did produce a range of tin whistling yo-yos in the 1930's.
As with all models from this era, the early Cayo models are sought-after collector's items, fetching high prices on sites like eBay.
