Im looking into purchasing this 1827 bust half on eBay and I don't know how to identify the Overton but I'm looking to see if one of you guys could tell me what it is? I do know it's the square base 2
1827's are tough! @okbustchaser knows these. I think O-105 is a possibility. That's an R.3, 201 - 500 known. So not rare, but a bit more interesting than some. But don't take that for gospel. Someone check me, please.
It is 105 as longshot said. Fairly common die marriage and as such I personally think you could do better than this scratched up example.