1953? I think?

I found this DP sign in a barn that had nearly fallen in about 6mo ago. I wish I had gotten to it sooner but it is what it is. I've been trying to get a correct date on it ever since. The manufacturer and date are written on the back but unfortunately 1/2 of the print has rusted/faded away. At 1st I thought that it read 1933 but idk. Now I'm thinking maybe 1953? I know during the 50's they took the '' . '' out from between Dr & Pepper. I also noticed the word "DRINK" above Pepper isn't on some signs and I'm not sure about the 10-2-4 logo or when it was removed. Besides that I believe they had a very similar (if not this same) sign that would be in stores or restaurants where the open board would be chalkboard to display daily specials. I'm just not sure. You guys probably know a lot more about these than I do. I hope so anyway. Thank you in advance everyone.