Here is a Valley Forge Porter Ball Tap Knob from the Adam Scheidt Brewing Company located in Norristown, PA. This Valley Forge Porter Ball Tap Knob is from the 1940’s era and is in excellent condition for it’s age. Valley Forge Porter was one of the brewery’s flagship beers at that time. This knob is made of a porcelain enamel over copper face mounted on a bakelite black body.