I bought some nicer coins a couple days ago and this one was thrown in as bonus and I’ve never seen one with this kind of reverse, I did find some other coins online with the moon and stars though. I would definitely appreciate any help. Thanks!
The crescent/stars reverse was used at Marcianopolis by several rulers. I believe yours is Diadumenian, son of Macrinus. https://www.cngcoins.com/Coin.aspx?CoinID=158102