1938 Washington plate and 1930 CA plate

I have this beautiful Wash. plate. First in its series too. Look at the plate #. Im trying to have it appraised to see what its worth. Ive seen one similar though with A-00000, instead of A-0000. Can any one help me with any knowledge of these old plates and what they may be worth. The five zeroed plate was on fee bay for 400 bucks. The Cal is alot rougher though. Thanks alot