And of course, you're not going to find pennies that are older than, say, the United States, or before they even started printing pennies. So obviously this tail isn't going to go to the left forever, but my guess is you're going to have a left skewed distribution. Where you have the bulk of the distribution on the right, but the tail goes off to the left. That's why it's called a left skewed distribution. Sometimes this is called a negatively skewed distribution, and similarly this right skewed distribution could also, or this right skewed distribution, sometimes it's called positively skewed. And if you have only one hump, you don't have a multimodal distribution like this, in a left skewed distribution, your mean is going to be to the left of your median. So in this case, maybe your median might be someplace over here.