Probably a fifth century nummus. I can see AVG on the legend but the previous parts are not visible. Could be a fairly rare coin. These late fifth century bronzes are not that common. My guess would be Leo based on the design of the monogram. Here's a page by @dougsmit : https://www.forumancientcoins.com/dougsmith/feac71leo.html
I’m guessing Marcian. https://www.google.no/search?q=marc...U8AhAIHb6MB9MQ_AUoAXoECAIQAQ&biw=1024&bih=666