Am I dreaming to remember Aero Gloss rubbing compound being a part of the story?
Someplace I have a jar of Pactra Aero Gloss aluminum, which was a thing for large-scale natural metal aircraft (I still have a jones for big bombers and century series fighters) before Bare Metal and the galaxy of metallizer type finishes were available.
Alas, the planes still sit on the shelf.
One of these days...