Most likely one of the many types of Garolite. They are either epoxy or phenolic laminates of fiber glass or fibers of cotton. The off green you describe sounds like G-10 the orange most likely LE. Can be acquired at most supply houses that stock raw materials. McMaster Carr and MSC are two that come to mind. Worked with carbide tooling.
Life is not a journey to the grave with the intention of arriving in a pretty, pristine body but rather to come sliding in sideways, all used up and exclaiming, "Wow, what a ride!"
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