This Playskool - Keys of Learning - toy is dated 1980. Great for developing motor skills, hand eye coordination, etc Colored shaped blocks fit into like shaped cut outs on the top of the base. Each key is colored to match the colors of the shaped blocks. Each unique key fits fit into corresponding holes. If you turn the key, the shape pops up. The blocks fit into the square in the top and the keys can be stored in the well on the side. Keys Of Learning Complete Set Key & Shape Puzzle Toy. Vintage 1986 Playskool Keys Of Learning Complete Set Key & Shape Puzzle Toy. All 6 keys and pieces are included. Recommended Age Range: 2-6 Years Made in USA 🇺🇸