lincoln cent error

Going through my coins and just discovered this, curious as to thoughts on what it may be, rarity, and potential value. Thank you

I have a number of bank bags which i have gotten or been given over the years. I was re-arraigning my collection recently and this cent fell out of one of the bags as I moved them. The bag has likely been in the storage for at least 15 years. A capped die strike (III-B-10) definition - a...