Star and Moon Tokens

Is that one player constantly forgetting to track their spell slots? Or do you need some kind of token system for another purpose? Each of these coins has Mystra's eight-pointed star on one side and a crescent moon on the other. There is a token with no numbers, as well as tokens with the numbers 1-9 on them (Century Gothic, so the 6 is kind of a 9, but it's a cool font, so hey). Geometry is crisp and flat, with no wear or effects as such.