Remember the Demley Auto Dice? It is a mechanical dice that gives you a new pair with the push of a button. It was made in the 1920s and is quite a rare item. The Dice-o-Mat Mechanical Dice may be even rarer. It works in a similar way. You just have to push its metal tab to get the two dice in the viewing window spinning.
The game has a plastic case. It can be used for backgammon and other games that require two dice.