I checked 4 layouts before I saw one I could reach....on the shelf layout. Ladder, ceiling fan whapped me, nope Marx, ok got it...over there.. duck. Oh man is it dusty...
White vinegar, paper towel, 150 very hard scrubs across the Lionel name only.
Looks good, just got whiter. No fade. I didn't have black paper towels so lifted paint could be seen, darn. But I can't detect any loss compared to CTC which is cleaner without trying.
A long soak may differ though. Your lock on ink might too.
If you detect lift, stop and let it air dry overnight. Hopefully it will reset (likely)