Cool little find. A key ring medallion from the Telephone Pioneers of America. "From the very first, the Pioneer symbol was a double triangle around the words “Telephone Pioneers of America,” and, in the center, the Bell system’s traditional bell. Appearing on the bell is number 174,465, the United States patent number given to the Bell’s fundamental principle of the electric speaking telephone. In 1912, two other numbers appeared on the symbol, flanking the lower corner of the bell. The date 1875 commemorates the experiment of June 2, when Bell verified the theory of the electrical transmission of speech; the second date, 1911, the organization of the Telephone Pioneers of America."