Various Manufacturers - 1500, 2500, 2554 Style Phones

The 1500, 2500, and 2554 touch tone phones were originally designed by Western Electric, but the designs were licensed to a number of different manufacturers.  As a result, these phone models were produced by Northern Electric, Kellogg, ITT, Stromberg Carlson and several other manufacturers.   We present in this collection a variety of different variations of the models without specifically naming the manufacturer of each one.