I ran across this article in Billboard May, 29, 1954 titled "Most Maker's Hold Hue Set Production" in top right corner: http://books.google.com/books?id=bx8...%20set&f=false

It gives a lot of info about manufacturers at that time. It said that several makers had "a few hundred" pilot sets out with distributors for demonstrations.

Lot of good info in there.


Also ran across another interesting article from '54 on Motorola's mobile test truck for color tv: http://books.google.com/books?id=xNw...r%20tv&f=false