See the striation lines on the edges of the devices. That is showing us that the metal was pushed with the edge of the dies metal. Si it is not a doubled die. If you had included images of the date, it would also show the same thing. So if the date and mintmark is affected, it is 99% chance of being being Machine Doubling. Because until 1990, the dies were prepared first, then the mint mark was added. If you see the same affect on both, it is Machine Doubling.
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