Autolite FORD Sparkplug sign - $399 (NE Ann Arbor/Plymouth)

four foot by four foot lighted Autolite Spark Plug sign Very nice vintage sign.
Great color.
Has not been cleaned in 40 years.
As found, will clean up great Solid aluminum frame, aluminum back, one sided wall mount.
Solid brackets.
$399 is a gift Indoor or outdoor use.
Man cave, garage basement, cabin, work place??? Please look at all photos Best to call or text thank you