In situations where two communities shared the same name in a given state, it was possible for both to end up as town names in the tombstones of national bank notes. Adam Stroup brought a third example of this from Pennsylvania to my attention, this time two places named Millerstown across the state from each other. One is in Perry County north of Harrisburg, the other in Butler County north and east of Pittsburgh.
It is notable that all three cases of these duplicate town names are from Pennsylvania, a point worth a bit of examination. I have not identified an instance of this among the national bank note issues from any other state. If you know of one, I sure would like to learn of it.