1955 Die chip on wheat & obverse with die chip Lincoln Cent
There is a die chip on the wheat to the right of the reverse. The Overseer has a small die chip under the E of LIBERTY, which I think is the first step towards becoming a BIE or something similar that I'm seeing a lot of up.
It looks like there is a die chip between 9 and 5 of 1955.
This also looks like the beginning of something more obvious than this that I'm uploading. I think it is rare to be able to obtain several coins whose changes can be predicted like this.