Antique Advertising Thermometers

Advertising thermometers first appeared in the 1900s and were widespread in the United States by the 1920s. Intended to be hung outside, the earliest were made of metals like tin, plus wood. Eventually, they were also made out of the same material as porcelain signs. Common shapes for vintage advertising thermometers include round signs with hands like a clock, and vertical rectangular or die-cut signs with a mercury meter in the middle. The...Continue Reading