This plastic yo-yo was made by Duncan Toys Company from the 1950s to early 1960s. Made of the clear plastic Tenite, it was part of Duncan’s “Imperial” line. Featuring a chevron logo, this model was the original standard for the Duncan Imperial. Later Imperial's featured a fleur-de-lis instead of a chevron. The hot stamped seal reads “Duncan Imperial, Tenite, Yo-Yo Tops.”