Looks more like a damaged mintmark punch issue that year.
https://www.coppercoins.com/lincoln...ie_state=mdsNote on this variety, you see the same area affected, but it is not a RPM on that area. The RPM is a West. (Look at who submitted this coin?) Also note who took the images for this coin? So this is just a damage punch issue on the central area of the mintmark. (A hard punch making marks into a tempered die. After many times of doing this, something is going to give. The hammer and the die is a larger substance)

When you look at other die listings you will see varying damage to the mintmark punch on them. (Even non RPMs will show the same thing)