this one is sweet, nearly the full profile outline of portrait on reverse. to date have scored about 7 83-p's, an 84-p, an 88-p and 89-p, 348 nickel boxes searched
When there isn't a planchet between the dies when striking, the dies hit each other. This transfers parts of the design to each other. Usually the mint will polish away this transfer or discard the die completely. Google "prisoner cent" for an example on a Lincoln cent.