Jackie sherwood

Hi Hello everyone. I've come across this unusual item it looks like a blob of silver tone blob like item. AI is saying it looks like an Ancient Ionia coin of some sort ?? I have absolutely no idea it rather thick it doesn't stick to a magnet it measures around 2.5 x 2cm. It appears to have some kind of pattern or something on one side and pitted on the other I would be very grateful for your help any suggestions you may have thank you all in advance. Jackie 😊 .