Cool, Scarce 1920s Mechanical Push Button Dice Spinner (Slightly Unpredictable)

I think this is way cool--a 1920s mechanical push button dice roller. At first I thought it was likely a one off, maybe adapted from a bridge score keeper, but a little searching reveals these were manufactured, and are highly collectible now. To push the button on the side is to roll the dice . This one is a little wonky--sometimes one of the "dice" spins fast and the other more slowly, and it can take a little pull on the button to square them up, but it works, and is fun, and is just a great object in all regards.

3 3/16" x 1 3/4" x 3/8".Good overall condition, some rusting to the surface of the underside. As noted above, the "rolling" of the dice here can be a bit unpredictable, but it works.