Like the earlier IC herald (in green) on the side of the cab. Perhaps a remembered artifact from Bob McMillan's youth.
It was noted in the above 'tube tape that 4-8-2 2405 was lensed in Jackson, MS. Perhaps the early, smaller IC 4-8-2's worked in the deep south. The IC's second group of spoke driver 4-8-2's - outfitted with 12 wheel tanks - worked east of Freeport, IL, handling meat trains from Council Bluffs, brought over the more rugged profile of Iowa and NW Illinois by 2-10-2's. The remainder of IC's 4-8-2's were more modern, with boxpok drivers, which worked the "Mainline of Mid-America", hauling 60 mph hotshots and coal trains, with equal aplomb.