The box for these rare Perception Plaquest is long gone, but they were made by Creative Playthings in their heyday of producing fabulous teaching toys, 1969. The tiles are wooden, painted white on one side, and printed with these wonderful faces. And I must say it does take some attention to properly match them! Great for the kids, but also great from an object design standpoint--and perhaps to keep handy for announcing one's daily mood!
24 tiles, each measuring 2 1/2" x 2 1/2" x 3/16". Some wear and a a few scuffs and scratches but overall good condition.