The Flying Scotsman

[The Q]

This is her in Modern times but Wartime livery

[neloon]

Yes, Jock, she would have been painted in "wartime black" in 1947.
The "panel things" are smoke deflectors to a German design which
were put on relatively late; many of the class received them in the
late 50s/early 60s. It's surprising that the choice was made to
apply them to the preserved locomotive since they covered such a
small fraction of the her working life. She also has the double
chimney which was also a late modification.
Alan