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.
So, the spot price of one ounce of silver coins is actually close to 80% of the spot price of silver itself. Beware of auctions that offer 1/4, 1/2 or one troy pound -- a troy pound is defined in terms of the larger troy ounce, but contains only twelve troy ounces, not sixteen!