Thats a wonderful little piece of history you have there Stealth Hunter.
I think little objects like this are fascinating, just think of the thousands of pairs of hands that coin has passed through, the thousands of miles it has travelled from when it was minted all those years ago till it came to you.
Keep good care of it and if you learn anything more about it keep us posted.
BTW, I think we need more theads like this, makes a refreshing change from arguing about politics or global warming etc etc.