Randy: Looks like a small cutting error called a "butterfly". Worth about $30 to $40 to an interested collector. Bills are printed in sheets of 32 notes and in three phases. Reverse print, obverse
Darrick, Sorry - -no - -take a look at http://www.google.com/imgres?q=1955+double+die&hl=en&sa=X&biw=1366&bih=644&tbm=i
Beck: Although your photo is fuzzy, it appears this may be a true doubled die reverse cent. I again request you contact the expert of doubled dies, John Wexler, at this link: http://doubleddie.com/92301
Hi Darrick, It looks to me like your coin has strike doubling -- not a doubled die. This is usually caused by the wearing out of the die as it goes through striking thousands and thousands of coins
Christine: If it is an unstruck cent blank, it would weigh the same as a struck coin, but be slightly smaller in diameter. These sell from time to time for $2 to $5 to an interested collector. U

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