Here is a Mint Tom Collins Lighted Sign for the Old Mr. Boston Distillery located in Boston, MA. This Mint Tom Collins Lighted Sign is from the 1930’s era and is in excellent condition for its age.
This Mint Tom Collins Sign was made by the Biolite Inc. sign company located in New York, NY. This style of sign is known as a Biolite Bubbler. The sign is made of a reverse painted glass face mounted in the backlit metal and wooden base. Inside of the sign body, there is a glass tube filled with a clear heat sensitive liquid. When the sign is lit with the 15-watt bulb the bulb heats the liquid inside of the tube and causes it to bubble, click here to view the sign in-motion.
Signs like this one would have been displayed as a bar back sign behind the bar and was used to advertise Old Mr. Boston Mint Tom Collins liquor. When the sign is lit and bubbling it’s definitely an attention grabber for patrons of the tavern.