The 1818/9 is the most common overdate in the Bust Half series, but it's still not easy to find

The first one I had was fortuitous in that I bought an 1818 in an NGC holder, but upon inspection, when I received it, it was an 1818/9. I sold that coin. Can't remember if it was a large or a small 9, but what I'm discussing here is the small 9. The small 9 reveals more of the 8 which lies under it. Also, there was only ONE set of dies for this particular overdate, as opposed to several for the large 9. It is therefore the more scarce, overall, of the two (although there are some die marriages of the large 9 variety that are scarcer). Here's a photo of the overdate. The whole coin may be seen in my registry set.