Not very helpful for the new member. @coining around I'm afraid your coin is suffering from die deterioration and the zinc issues from the cents post 1982's switch. The coin is unfortunately not a doubled die or any sort of error. Keep searching though!
No, it is a defect in the copper shell/zinc core joining, allowing the zinc to protrude. Mechanical error.
Thank you for sharing.. but it is not a Doubled Die As stated, it is Die Deterioration Doubling I want to share this webpage with you - http://www.error-ref.com/die-deterioration-doubling-incuse/ Also.. your Mint Mark will soon have this - http://www.error-ref.com/zinc-deterioration-on-lincoln-cents/
Not a bad idea. It's not very user friendly and I've been here a while. How can I expect a newbie to use it?