this is a 1956 D over shawdow "D" , I think. The Cherry Pickers guide only states that the "D" will be to the South. I have this one to the East, and another to the North West.
Here is a photo of my 1956-D/D ( RPM-008) shadow D for comparison. Hope it helps. If you haven't visited http://www.coppercoins.com/ yet, you can search their site for most varieties of the Lincoln cent. Jim
WOW! Some nice looking coins! I don't know the value, as I am a wheat man, but not error type man, but good luck!