The key to attributing 1878 8TF's is the junction between wings and body. The combination of small feathers on each side differs with each die, and although a few dies were used more than once you can narrow the field down to two or three possible VAMs with just that feature. Dave has done so - V18, 19 and 20 look very similar and I think he's seeing one or the other of them in the big round feather at the bottom of the eagle's left (viewer's right) wing.






























