I see what you are seeing! However, there are not two different effigies or images of Lincoln. All of the Master Dies for all of the Mints were made at the Philadelphia Mint and what you are seeing are the effects of Die Deterioration, Die Polishing and Grinding that has caused the differences in the Dies. If the differences in Lincoln's image on the two coins were a result of planned changes to the Dies as in the Master Dies, then one or both could be considered a Die Variety. However, I know of no changes made to the Dies during the 1943 production year.
Frank