Didn't think they were around at that time. Know i was just happy to have one that wasn't crystal controled.
Must have been top of the line back then.That $172 in 1977 would cost you $792 today. Nice find especially with the receipt.
The first emergency call boxes in the U.S. were installed by the Gamewell Company of Newton, Massachusetts in the 1880s, according to the company's website. Those boxes telegraphed the location of the call to the central fire station whenever the lever was pulled.