It's a die chip and these chips located between the B & E are called "BIE" cents. There are people who collect them and there used to even be a collectors society of "BIE" cents back in the day. They were rather common in the 50s with sporadic examples also occurring in other decades. Value? A buck or two if you can find someone looking for this specific example.
Thanks I looked it up. Found it in a pile of wheats I have collected through the years out of change. Have at least 5 thousand or more. I could roll them up and truthfully sell them as unsearched.
I always like finding "BIE"s, and I'm about to embark on a project to catalog them and further expand on Jean Cohen's cataloging of them from the book, "The Classification and Value of Errors on the Lincoln Cent".