2003 object behind Lincoln's head ?

[addictedtocoins]

I'm not sure what's going on behind Lincoln's head. I thought I saw a coin like this listed before but can't find the thread. Any thoughts are appreciated.
http://www.lincolncentforum.com/forum/attachment.php?attachmentid=105986&stc=1http://www.lincolncentforum.com/forum/attachment.php?attachmentid=105987&stc=1http://www.lincolncentforum.com/forum/attachment.php?attachmentid=105988&stc=1http://www.lincolncentforum.com/forum/attachment.php?attachmentid=105989&stc=1

[willbrooks]

Could be a few things, but plating blister is the most likely.

[addictedtocoins]

Could be a few things, but plating blister is the most likely. Thank you Sir. I thought I saw a coin like this posted earlier. I couldn't find the post.

[enamel7]

Looks like plating blister to me also!

[mustbebob]

There are some trail die oddities that affected the head area. Maybe this is something you saw before?

http://www.traildies.com/trail-die-oddities