Hello Joe, thank you for responding. I do believe it is electrotyped and not cast because I can't find any
signs of casting such as bubbles or a porous surface. But what makes me cautious about this coin, besides the tonality (typical of electrotyped coins), is the edge. However, if it is indeed electrotyped, it doesn't have the MB signature or any other similar marks. I also noticed a small bronze spot just above the helmet between 11-12 o'clock. So far, I've only seen one
type of electrotyped
Roman Republic coin, and it looked nothing like this. I would like to hear more opinions on it. Thank you.