Here are pics of an 1863 penny that I found in a bulk lot a couple of weeks ago, and have not seen before. At first glance it could be mistaken for a 3/1 overstrike, but I am sure this is 3 over a mis-placed 3 also giving a spike from the outer curve of the '3' but this spike curved rather than straight. There is a small step in the top bar of the '3', which is possibly due to the top bar of the repair '3' punch, though the distances would not fit with the curve of the spike unless the overstrike '3' punch was of a different size font so the jury is out there. I would welcome opinions, but it is interesting and has a place in my collection, particularly as it cost nothing.
Jerry