I agree with your actions on your examples, but the key was not the type of paint (maybe you're an expert in paints, but most of us aren't) or in the "full" paint job v. airbrush job, but rather that the NOCSAE stamp and the warning lable were no longer visible.
If the paint job has been thinned / masked around the NOCSAE stamp / warning lable so both are still legible, I am not going to try to determine the paint technology used.
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Tom
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