This is an original card with instructions for operating the overdrive. It was provided to hang from the rear view mirror, and comes with the original grey string.
It measures 3.5 x 5".
I am not exactly sure when the Aero-drive was available, but I guess around 1940-42.
This would be the 'cat's meow' in your car.
I'll take $30 and will ship it USPS First class.
PM me for details if you are interested.
Bob
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