8W0563 - 1958. That was before it was pointed out to the FCC that they had NO Authority to assign such calls as that was not a bloc allocated to the USA by the ITU in Geneve. "8" was the FCC designator for the office in New Orleans, LA and 563 was just a numerical serial. The FCC thought, wrongly, that the "W" made it ok since W is assigned to the USA. However, the ITU Radio Regulation on call sign formation requires the National Identifier to be at the start, not in the middle! With respect the Washington Times newspaper a few years ago published an analysis of the Bar Examination results of FCC lawyers. Of all Federal Agencies surveyed for the story, the FCC was about at the bottom of the list. Interesting, is it not?
My radio(S) at that time were Gonset communicators. I'm not sure when the Gonset company bit the dust of radio history. Ah, the good old days...