I was noodling some half dollars and found something interesting: A 1998
Kennedy half with a smooth edge. There were 3 other 1998
Kennedy halves in the bag, and the reeded edges ranged from "crisp and clear" to "shallow and partially smoothed", but the smooth edge coin shows no sign at all of a reeded edge being applied. I only have a digital scale to 0.1 grams, but all 4 coins weighed about the same on my scale: 11.1 to 11.2 grams. Is this a recognized error?