Wayne - Think about this, why would IGT have made a big deal about you were winning a .999 pure siler coin when they first came out with the $7 strikes, I remember the large signs stating a .999 silver coin, I also think they came out with the .999 silver strikes because the $2 Brass coins weren't getting continued play as they did when they first came out. I also remember that people played the $7 strike machines because they were going to win a pure silver coin and I still see this today, there is magic in advertising a .999 Silver coin.
Walt