I don't know if I'll sound batty but I don't think anything else stood out to me at first glance.. I'm gonna go with the 8s are upside down
I got lost. I was looking and I see the 1807-1808 style, alright, so i moved on. 1810 has the second style used.. But then I get lost and I just don't catch it.
Reasonable guess. Each year does either feature an overdate, or provide the underdate for another overdated year--ie, 08/7, 11/10, 12/11 (actually the only overdate pictured), 14/13, 17/13, and 27/6 among others. Not what I was looking for, though, as other years in the series also would then apply--such as 1818, 1819, and 1824.
BIG !!! Although I am rather obsessed with 27's, I do actually own the other years--just not as many of them.
As there are no known 1810 or 1826 overdates, I thought it must be something else. Are the 1810/1826 varieties last in the emission sequence?
There aren't any 1813 overdates, either. But no, the pictured 1810 and 1826 are not the last Overtons in the emission sequence.
I think I got it… the Bust half dollar was the only silver coin produced by the US mint in mentioned years.
What do those two Busties have in common? There are a couple of things... and it's not the number of stars ;-)