I love the design of this vintage Contack Game--super visually satisfying, and also a lot of fun to play. It's akin to dominoes, but a bit more complex as moves can be made not just by matching sides in number and color, but also by touching sides to add up to multiples of 5 and 10. The complete rule book, including instructions for how to score, is included. A great learning game for the kids or a perfect happy hour diversion, and easy to throw in the bag to play anywhere.  

The game was designed in 1939, first introduced by the Volume Sprayer Mfg. Co. of Tulsa Oklahoma, then published by Parker Brothers later that year. I am not sure the date of manufacture on this set, complete with 36 pieces in the original box.  The tiles are a nice weight--made of particle board I believe--and in great shape. The box, which shows a little wear around the edges, measures 3 3/4" in diameter and 1" thick.