I came across this coin yesterday and am really struggling to find anything about it. It appears (if genuine) to be much older than any I've ever come across.
It's 22mm in diameter, at its widest point.
About 1.2g
No idea what the composition is.
One side appears to have a long cross type symbol, surrounded by crowns. On the reverse, there is what appears to be a man standing under an archway, with the possible letters ‘KII’ to the left.
Any help would be much appreciated, thank you. Photos are below.








