M4A3 T66 track question

Were they painted at the factory before they were shipped out?

If so would the spares on the hull sides also have a coat of paint?

Thanks in advance!!

J

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I’ve always assumed they came with some kind of protective coating, which of course wears off in use.

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It is my understanding that the tracks were bare manganese steel castings. Sometimes they were treated with a light oil or cosmoline-type preservative. Occasionally mill scale or black oxide from heat treatment was visible.

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