The two in the middle are the uncommon number 1 mold "backwards 44" variants. It's thought that Lynchburg fixed this mistake early as very few of these seem to be out there. The unit on the right is the corrected version of the number 1 mold with the fours slightly misaligned. Three of these came from southern West Virginia while the fourth (the cleaned up backwards 44) is from Low Moor, Virginia.