Sony Creative Products Inc. Character stickers featuring "Uchi no Tama Shirimasen ka?" (Do You Know My Tama?) and probably the penguins from "Let's Chat," and Baikin-kun (?). These are novelty items from Gakken. There are two of the same stickers. They were found in the drawer of a child's (though now an adult's...) desk. They seem to have been stored for about 20 years. No individual sales, immediate purchase OK.