Very rare glass pocket flask dating to the early 1910s once housing Red Sox "One Ball" brand whiskey. Measuring just 4 5/8" in height the hand-blown glass bottle remains in strong condition some mild soiling and staining inside. The Red Sox label remains firmly attached some slight notching at the edges in places most pronounced at the bottom-left. THe label pictures an illustration of a baseball player "Red Sox" on his jersey with the brand above and below the illustration. A raised letter "Honest Measure" banner appears on the reverse as well as the remnants of another label copy unidentifiable. The Red Sox whiskey flasks are rare in general; this example is just one of two different that we have encountered in this particular bottle shape. A very rare and desirable Red Sox-related collectible.