1959 RCA memory device

[Chuck Guzis]

In this 1959 Popular Mechanix report of HECK--RCA's "Home Electronic 
Center Kid", the following is mentioned:

"To speed up the working of electronic computers which assist in such 
discoveries, the RCA lab recently devised a memory storage plate 
smaller and thinner than a four-cent postage stamp. It has 256 tiny 
holes in it and can keep a million facts on file and produce them in 
any combination or alone in milli-seconds."

Does anyone have any additional information about this device?  Was 
it ever commercially deployed?

(A couple of interesting asides:  Note the "Roomba" in the photo and 
the description of the about-to-be-produced RCA Nuvistor--and what 
appears to be a raised floor in the exhibit. And the ghastly 
"contemporary decor"--could orange shag wall-to-wall carpet be long 
in coming?)

Cheers,
Chuck