1980's California Crown Mint 5 Troy Ounce .999+ Fine Silver Michael Graham Kit Kat Style Art Bar - This piece is a 5 troy ounce, .999+ fine silver kit kat style bar produced by California Crown Mint. This bar is becoming harder and harder to come by, as you more often see the 10 ounce size. The bar is stamped with the CCM crown logo, the initials MG, and also with the silver purity. This is a great investment bar, as very few were produced. This a nice addition to any collection.This is a true investment bullion piece, as the values of these error bars keep steadily rising. They have become some of the best investments over the years.