W6GAZ 1958 Beverly Hills, California

Operator: Tom McDermott

This is a promotional card provided by Twentieth Century Fox presumably to staff.
Postmarked Beverly Hills, 1959.
There is an actor by the name of Tom McDermott on IMDB but sparse information and no helpful link.

I believe Tom S. Dermott was really W6GAZ. The actor Tom S. Dermott was born 1912 and died in 1996.
W6GAZ was issued to Tom S. or Thomas S. Dermott from the 1930s to 1995 ... one year before the actor died.

QSL + Info G4UZN Collection
Second paragraph Info courtesy of W5KNE