i thought i had the answer. i have the exact item that came from the deck lid of a '36 chrysler royal. that is, until my "wings" measured only a tad over 6" in length. [that means oz's wings are BIGGER than my wings !] how big are your HANDS oz ? but i think the the airflow cars had a big wing below the rear window. my guess is it belongs to one of those. good garage art score !