Vintage 1930s/40s Carnegie THE BEER EVERONE LIKES ball tap knob. Red plastic with aluminum/metal insert. Very nice condition especially considering its age. Has been in my personal collection for 40 years! Insert has great color and just the slightest wear. There is a teensy chip in the red plastic at 2 o’clock at the front – hardly noticeable. From Chartiers Valley, Duquesne Brewing, Pittsburgh, PA – not on insert but patent numbers are.