Vintage Beer Tap Markers: Ball Knobs, 1930s-1950s

Following the end of Prohibition on April 7, 1933, U.S. federal and state governments set specific requirements regarding the identification of beer being dispensed from taps in taverns. The tap, faucet, or other delivery system had to be clearly marked with the name of the beer being dispensed, leading to the development of a tap marker industry. Through the mid—1950s, a style of tap marker nicknamed the "ball" knob was widely used. Now highly collectible, more than 2000 colorful ball knob...