It's 1 3/4" across by approx 1/2 " think. It's solid brass or bronze and also the front rim or border is flush with the figure.
Now you all can guess all you want to as to what the “figure” is but the first thing you need to guess is, ……. “
why is it 1 ¾ inches in diameter and ½ inch in thickness and made of solid brass?”
Now those dimensions alone limits what it could have been used for, regardless of what the image is on the front of it.
Now me guessed wrong about it being a "running" figure but me still thinks that it is part of a paper embossing stamp, to wit, like this: