The images at the top of N#908 show 1956D one cent coins with two varieties: “Re-punched mintmark (D over D)” and “Shadowed D”. In going through my wheat pennies today, I found one definite “Shadowed D” coin (the right-most image in the 1956D enlargeable image), with a farther-north-than normal “D” very close to the tail of the 9, and very lightly printed “D” south of that one, with no overlap. I may be able to post an image to show you what I see, but it looks similar to the right-most image in the 1956D enlargeable image.
The easy way to spot this difference appears to be a much farther north than usual “D” mint mark. It really stands out when I am looking at fifty 1956D coins laid out on the same cloth.



