This is a genuine 1658 Cromwell Portrait shilling. I purchased it from England from FORMAT of Birmingham B2 5QJ England. over 50 years ago. I can send more photos if need be. The pictures show all and the condition is what you can see.
I would like to mention that there is an unusual punch mark that is so tiny the photos hardly show it..
It is located in the field of the coin after the O in PRO. It shows as a tiny circle. Under great magnification it seems to be a duck of some kind. It is a silversmiths mark for some reason long ago.
The item is available here in Queens borough NY City for your inspection. You can send an inspector to certify the coin if you want to .