The advertising fob or charm measures 7/8'' x 1-1/8''. It appears to be in excellent condition as pictured. Below here, for reference, is some additional information on RCA:
Radio Corporation of America
From Wikipedia, the free encyclopedia
RCA Corporation
Founded: 1919
Defunct: 1986
Headquarters: New York, United States
Key people: David Sarnoff, first general manager
Products: RCA Photophone, Electric phonograph, Videodisc, RCA televisions, RCA Studio II, Divisions, NBC
RCA Corporation, founded as the Radio Corporation of America, was an American electronics company in existence from 1919 to 1986 when General Electric took over the company in 1985 and split it up the following year. The RCA trademark is used by Sony Music Entertainment and Technicolor, which licenses the name to other companies such as Audiovox and TCL Corporation for products descended from that common ancestor.