From the early 1990's until a few years ago, many casinos had special slot machines that paid out these attractive bi-metallic Ten Dollar gaming tokens. The tokens, called Silver Strikes or Silver Premium Tokens, could be redeemed for cash or kept as a collectible. The tokens and slot machines were popular. Casino patrons would sometimes drop over a hundred dollars in a slot machine in order to win a $10 token! The 43.5mm tokens had a .999 silver center core surrounded by a brass ring.