#### How much silver is in 100 Mil? — Collectors Universe

The 100 mill thickness is actually thinner than the copper plating on the zinc cent. ... The layer is pretty thick, but not much in terms of troy ounces. You'd have to do some slick geometry calculations to figure out how many grams (a measure of mass) of silver there are. Then, use the conversion of 1 gram = troy ounces.