

I'm thinking it is this coin: https://en.numista.com/catalogue/pieces44872.html even though the weight is wrong [after all my scale isn't calibrated]. Is this right or is there a better option?
The year appears to be 164__ - there isn't any final number so I guess all I can do is pick the a common one and add a note that it is a wild guess.
My coin weighs approximately 1.3 g and is a tiny bit larger than a United States dime.
Is it common to be off-center like this?
Thanks