Last year I bought these three cars at a train show. I'm puzzled that they are mostly bare of paint. When I got them they did not appear to have been previously disassembled, as would be expected if a previous owner had used a paint stripper on them. The celluloid windows are still in place. The bent metal tabs inside did not appear to have been bent open and re-bent. The screws attaching the trucks to the frame were mashed over (presumably original), really difficult to remove. The labels on the bottom (about oiling the wheels?) are illegible but still there. There are just traces of faded paint, probably the common peacock color?
Is it possible they had poor paint prep originally, or someone stripped the paint without disassembling the cars and then didn't get around to repainting them? Maybe they were submerged in a stripper chemical? but the labels are still there.
I took the cars apart to clean badly rusted wheels and trucks and frames. The latch couplers were a mess, all bent and rusty, so I replaced them with scale dummy couplers between the cars and a Marx-compatible coupler on the front of the set. The blue plastic straws on the axles maintain better wheel gauge. The roof screws are replacements. I RUN these cars regularly now. They look better close-coupled; I never did like the cumbersome latch couplers.
Despite the blemishes, I like these cars they way they are. They look genuinely old and hard-working, too busy for a trip to the paint shop. The "Rust Belt Special".