Here's what I believe is a forgery of a Licinius I silver coin. I'm not sure of the denomination, and the reverse is obliterated. There are a few points where pink copper shows through, which leads me to believe that this is a cast(?) copper coin, dunked in acid and silver plated. For whatever reason. There's no reason a silver coin would have such extensive pitting and yet still have pink copper peeking through.
It is a campgate reverse. In your photo, it's upside-down with the ether three turrets, or two turrets and a center star on the bottom. I have a similar coin that I bought for fun for a few dollars on ebay. I've been trying to convince myself that it's an ancient creation rather than a modern one for years. The wear is convincing and it has some encrustations that make it look very old... but is it 1700 years old or 25? I don't know. Either a modern or ancient cast silver imitation of: Constantius II FL IVL CONSTANTIVS NOB C LDC left VIRTVS-CAESS S - F / ARLQ Arles RIC VII Arles 316 2.65 grams
Shoot, I have no idea what kind of spider senses you have but I saw NOTHING from that reverse! Your coin certainly looks pretty convincing to me, at least. But ancient or not, I think these forgeries are still quite interesting to hold. Main question: why forge something that really wouldn’t be worth TOO much if real, anyways?
