What you have is a grano of Alof de Wignacourt, Grand Master of the Knights Hospitaller of St. John (technically the Sovereign Military Hospitaller Order of St. John of Jerusalem, I believe) from c.1601 through 1622. A similar piece can be seen
here. The successor to this order is what is known as the Order of Malta today.
These coins are far from any expertise of mine, but when you have a coat of arms, the easiest way to identify the piece is through the coat, as I did with this one. If you want more historical background about the Order or Wignacourt, an internet search should bring quite a bit up for you.
Have fun!!