Estate fresh Antique WARREN'S FEED & COAL YARD  Advertising Thermometer from Redkey, IN. The 12"x3" wooden Thermometer is Mustard Yellow, has a 4 digit phone number and advertises feed, seeds, grain, coal and custom grinding. I have not cleaned the wood portion of Thermometer I have only rand a qtip across the actual Thermometer to make sure I could check for cracks and that it is indeed working which is.