Metal Double Cola Sign/Thermometer

I love how nostalgic this piece is and I love that's it's not a Coca-Cola sign. There are so many of those around. This is different. The thermometer isn't accurate, but I bought it for it's character anyway. I cannot find any information online about how old this piece is, what it might be worth, etc. I can find history about the Double Cola Company, but nothing about this particular piece. If any knowledgeable sign collectors out there can tell me the age, I'd appreciate it!