4-3. What does the "33" mean on the bottles of Rolling Rock?

     There several versions:

     The first is that it is the number of words on the label which a
     Rolling Rock employee wrote down before sending it to the
     artist/printer and it stuck. This is the most popular one.

     The second is that "33" is the year prohibition was lifted.

     A third, more colorful one, is that the brewery was started with
     money won at the track betting on #33 "Old Latrobe", hence the 33 and
     horse.