I'm looking at a 4 stereo LP RCA Soria Karajan set, LDS 9407.  It's a
packaging of 4 discs issued earlier individually, I believe. C. 1958. 

 

In the perimeter print along the top, it says, "For sale by authorized RCA
Victor dealers only."

 

I don't recall seeing this on any other RCA releases of the period.  Any
idea what this is all about?

 

Steve Smolian