boxful of Coca-Cola "all purpose" cardboard signs

"COKE adds life to... DOIN' WHAT YOU LIKE".

That's the pre-printed heading (w/trademark, of course) along with a multicolored circles design, at the top of each of this boxful of roughly 14" x 22" otherwise blank white cardboard signs. The brown corrugated carton that they came in says there were originally 50pcs inside, of "CODE AO55 ALL PURPOSE POSTERS". (probably 40-some of which are still in there, only a few seem to have ever gotten away) That same 'code#" also appears in tiny type in the lower RH corner of each one with "Printed in USA", but no other maker's or printer's marks.

I'm pretty sure that I'm the one responsible for "acquiring" these, from anybody-knows-where, probably in the late 1970's to mid 1980's. We all lived in a completely different house and town back then...somehow they still hung around waiting for me to reclaim them now. (blame that on Mother, I suppose...? <lol>)

Suggestions welcomed as to what I might actually *DO* with any of them...beyond probably 'not tossing 'em in the recycle bin', I truly don't have any decent clue if they might have any real value (probably not) or be of any potential usage (?) or interest (??) to anybody, or anything else???