The pics are of Texaco Fire Chief and Sky Chief ID signs. They are made of plastic or perhaps vinyl and both have discolored over time.
The dimensions are 6 x 22 (approx) the ends are slightly curved (like to go over a door or panel) . There are two slots at the top of the each one.
If anyone knows the application or how to properly identify I would welcome the information. I have had these for over 50 years and would like to dispose of them
but need to know what they were used on and frankly what they are worth -a WAG would help

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