I'd be most grateful for your help again. I'm looking at the coin shown in the image. It's very worn but the bearded face of the emperor seems strong enough to be identified. The best guess I can come up with is a Hadrian sestertius perhaps? The coin weighs approx 20g, is about 28mm in diameter and quite chunky in thickness at around 4mm. Metal seems to be copper.
If anyone can give me further tips, I'd be most grateful.
With thanks and all the best