​Original vintage ad for RADIO CORPORATION OF AMERICA.  RCA Erich Leinsdorf conductor of the Boston Symphony invites you to the premiere recording.  When we ask about the microphones over the stage, he tells us that before recording, an RCA Victor recording crew has been doing exhaustive experimentation and explain I want them to capture the most natural, most true reflection of the Boston Symphony in Symphony Hall.
This unique old one page 1963 high fidelity stereo record music magazine advertisement would display beautifully matted and framed.  It would make a nice accompaniment to your vintage stereo.