Here is an Old Reading Half & Half Tap from the Old Reading Brewery Inc. located in Reading, PA.  This Old Reading Half & Half Tap Knob is from the 1930s era and is in excellent condition considering how old it is. This type of ball knob marker has a stick-on sticker face with the Half & Half graphics on it; what is under the sticker is most likely the generic Old Reading Tap Knob variation.