One of the things to remember before going into extensive work with overlays to prove your coin is a die clash...
Die clashes are very common on 19th century
US coinage, and almost every single time you see a step-down straight line running across the field it's a die clash - no overlay needed.
Overlays are much more useful in determining similarities or differences in unknowns. Your coin is pretty obviously a die clash at first glance - no need going through all the work to prove it.