Gray Model 75 Three-Slot

This three slot pay station was the precursor of the three slot payphones that were common well into the 1950s and 60s. This phone is a 'pre-pay' model, and has the old-style transmitter and receiver (pre single-piece handset days) and an extra fancy 'mercedes' dial. This particular phone (photo at left) is a Canadian version, outfitted to accept Canadian coins.

Circa 1920.