Blow for Edison Mazda

Since my dad worked for 30 years in their lighting research division, I've always had a soft spot for anything to do with GE lightbulbs. This particular collectible came as an unexpected gift from a friend; dating to some point in the history of GE's "Mazda" brand (1909-1945) it came with this curious instruction: "Blow for Edison Mazda Lamps." And indeed, the little strip of paper at the top right forms  a whistle, which still works! It's also interesting to note that, though the bulb shown is one of the round "tipless" variety first made in 1919, the whistle itself has a "tip" (a protruding daub atop the rounded part, where the bulb was sealed).