Vintage 7up Soda Pocket Thermometer 2” Keychain Dial Sign Advertising Works Rare For Sale

Very rare ! Most of these just didnt survive. This is very SMALL. 2 inches. A little bigger than a milk cap roughly. It’s not in perfect condition by no means. But works like it is supposed seems to read the right temperature. It has a rusted key ring up top. Or a notch in the back. Has hung in my garage for years. Thanks