NYNEX Landis & Gyr Change Card Phone

Landis & Gry "Charge Card" made for New York Telephone a NYNEX Co. This is a prepaid card, coinless public phone. They were installed almost exclusively in Manhattan. The prepaid cards were specifically for use in these phones. This is the first of 2 types that were put into service. These earlier ones were likely used for field trials. The shape and mounting pattern iis different from standard payphones so I'm not sure where and how the were mounted. The yellow payphones were in service for a few years, they were a flop with the public and were removed and replaced with updated smart standard payphones.