I have been trying to find info on this Asian coin . A big Thank You in advance you're always very helpful in here .
This is as good of an image as I could get with my usb microscope - my phone seems to loose a lot of the quality
Your coin looks to be copper based on your pictures. This coin, if it were real, would be silver. https://en.numista.com/catalogue/pieces7387.html
Thank You furryfrog great link -- this coin almost looks like brass and the weight isnt right it weighs 20.9 grams wondering if it might be counterfiet ?