Coca Cola Kay Display Signs

I just picked up these two Kay display signs yesterday and I am looking for any information that you can provide. The story goes.... Like all of you I am always on the hunt for Coca Cola items and while at work yesterday I was checking out the facebook marketplace waiting to leave work at 4:30. The page provides pop ups of items of similar interest that I have viewed recently. The attached photo pops up with the following description " Pair of wood antique Coca Cola signs circa 1920's $XX for the pair. 23x12 (left) and 10x12 (right). (The seller posted the ad less than 24 hours ago.) I was not sure what it was but, for the price I figured it would be ok to take a shot at it. Within an hour of IM'ing each other we had set up a location and time to meet after work. I drove about an hour to the meet and I anxiously awaited the seller. With my $XX money in hand the seller brought the items out and I looked at the back of both signs and saw the words Kay Display. Winner, winner, chicken dinner! Hopefully my excitement of the purchase is being transmitted out to everyone. I am currently doing as much online research as possible but, I am not finding much. Please note that the purchase price was less than what it would cost for a dinner with the wife at the local Italian restaurant.
Thanks for the help and enjoy the hunt