I've had this for quite a while and almost traded it until I took a better look at it, it's not even round and now I have the Charlton 9th edition I see that it says cast counterfeits are known. This isn't even round and looks terrible it weighs in at 7.08g
Looks like a contemporary counterfeit to me, nice find Personally I find stuff like this more interesting than the genuine version.
Neat find! I agree it may be a rare contemporary cast copy. Have you checked out the edge? I have a Nova Scotia token which is an obvious cast - off metal, weight is high at about 10.7g. and the edge shows the sprue scar and filing. It is one of my most prized coins in my collection