Beer in Pennsylvania". Though it did not originate the term, the popularity of Rolling Rock doubtless reinforced it: one could refer to a regular (12 oz.) or small (7 oz.) of the beer as a "horse" or "pony" respectively. It also likely led to the standardization on a 7 oz. size: major national brands introduced 7 oz. pony bottles in the early 1970s, of which the most prominent is Miller High Life (pony introduced 1972). Number 33 The number 33 is printed prominently on all bottles of Rolling Rock. Many have speculated on the significance of the number 33: that the "33" refers to 1933, the founding year of the Pittsburgh Steelers (who hold their annual training camp at Saint Vincent College in Latrobe, PA); that 33 degrees Fahrenheit is the proper temperature to keep beer; the 33 degrees of Scottish Rite Freemasonry; that Latrobe test-brewed 33 batches of beer before coming up with the final formula for Rolling Rock. Other theories concerning the number 33 are that there were exactly 33 stairsteps from the brewmaster's office to the brewing floor in the original Latrobe brewery. Also that the Pennsylvania fish and game commission at the turn of the century numbered the streams within the commonwealth and the water that was used to brew this beer was taken from the stream numbered 33. The words "Rolling Rock" appear three times on the bottle for a total of 33 letters. One widely held belief is that it marks the repeal of prohibition in 1933. James L. Tito, former CEO of Latrobe Brewing, opined that the "33" signifies the 33 words in the beer's original pledge of quality, which is still printed on every bottle: While the original wording on the label was somewhat different, it also contained the 33 following words: This was followed by the "33". The current pledge is on the 12 oz. bottles, while the "little nip" pledge is from the 7 oz. bottle version. The 7 oz. bottles were referred in some parts of Pennsylvania as “nippers”, and a popular mode of packaging was in cases of 24, with a perforation so the case could be split in two, or a dozen each. A founding executive is said to have written "33" at the end of the slogan to indicate the number of words it comprised as a guide for the bottle printers. They assumed it was