On Sunday, while driving by the sign once again, I finally recognized it for what it was. Just like the Nationwide Theatrical sign on Broadway, it must be a repurposed Canada Dry sign!
An example of just such a sign is shown at right from the flickr site of a gentleman who goes by the name coreyu. The photo is also part of a whole collection of flickr photos connected with Canada Dry.
Although I'm a regular Vernors drinker, once in a while you feel like something different, and that's when I reach for the Canada Dry Ginger Ale.
But getting back to the Corner Store sign. Sadly, James R. Edwards, the proprietor of the store, passed away back in 2002. The place is pretty much boarded up.