Hello - Thank you for your question. I have looked through 7 books and price guides rich with Coke advertising material and your watch is not there. There are a lot of watches on the online market that are period to yours - they run 7-20.00 (on a good day, as you know.)
I think if this interests you that you should go the next step and find a Petrettis Coca Cola Collectibles book as they are the go to reference for this material. Here is an online link. So you know what you are looking for. http://www.amazon.com/Petrettis-Coca-Cola-Collectibles-Price-Guide/dp/0873492412
The other option is to contact Phil Mooney in Atlanta http://www.thecoca-colacompany.com/heritage/mooney.html He would be the person who would have the most unpublished information on Coke material.
Best wishes. Dori
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