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Aren't these known as the pentagon errors because someone that worked at the pentagon building first discovered them?
Not exactly. Your thinking of the CIA Invert, which was an error on this issue but an INVERTED error, not the color shift error shown here. If it were the CIA error it would be worth thousands of dollars (but not in this case), as noted in this link:
http://www.hgitner.com/cia-invert.html