I can see why you may think your coin (the second coin) is
overstruck, but if it is the remains of the host coin are so faint as to be unidentifiable. I am curious about the edge test at about 1-2 o'clock--does it show a copper core? There is also some green on the
reverse near a crack--perhaps also an indication we are dealing with a
fourree rather than an
overstrike. Silver foil coatings of
fourrees often show such cracks, easy to mistake for traces of overstriking.
As for the first coin, I see no real traces of overstriking, just the remains of scraping and rough cleaning.
All, of course, is just my opinion based on observation. I may be wrong, and in fact often am.
Mac