2009 penny Ring need input

have you ever got a Roll of pennys and seen this on the end?
looks like a ring for the roll machine anyone know what it can be?

almost like 1/2 moon look

 

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Thats cool it looks like its from a blade to trim the paper from the edge

 

might be common Error http://cgi.ebay.com/2-Rolls-Mint-Log-Cabin-Pennies-2009-w-Errors-I-Can-See_W0QQitemZ190299660904QQcmdZViewItemQQptZCoins_US_Individual?hash=item190299660904&_trksid=p3286.c0.m14&_trkparms=66%3A2%7C65%3A13%7C39%3A1%7C240%3A1318#ebayphotohosting

 

Thats exactly what it is.
Guy~

 

yep. From the rolling machine. Just a damaged coin is all.