Let's review. An ephelis, or freckle, is a type of macule, which is a small (up to 1cm in diameter), circumscribed, flat, and thus nonpalpable change in the pigmentation of the skin. By nonpalpable, I mean you can't feel it. Or more specifically, you can't feel any difference between it and the surrounding 'normal' skin.
The troy ounce is the standard silver price that you see on the t.v. 1 troy ounce = 31.1034768 grams or 1.09714 U.S. Ounces. It is usually just referred to as an oz.
The silver price is based in troy ounces and that means we need to multiply the metal price by .0321507466 to make the conversion to grams. $14.3861 is the rounded silver value for the 1921-1935 silver Peace dollar on April 16, 2017. This is usually the value used by coin dealers when selling these coins at melt value.