My mother took me up to her attic over the Christmas break.  She had a typewriter she wanted me to get rid of.  She said she thought it came from WMAZ-TV. 

I took it downstairs and examined it.  As the ribbon was tangled, I pulled off the ribbon cover and found the name Stan Carey underneath.  Stan was the anchor at WMAZ-TV (Channel 13 in Macon, Georgia) from the late 50s until the early 1980s.  He also played organ and had a number of recitals on air. This was obviously Stan's newsroom typewriter. Beside the name are US Patent Numbers and the wording that the machine is a product of Litton Industries.

But what is it?  I'm not familiar with Royals, and the typewriter database lists the serial number in the 1920s. Obviously this is a much later machine - one from the era Stan was at 13.  The serial number is A7V - 11- 1228394.  The first numbers are probably the model number and the width of the carriage.

Update - Jay Respler of Advanced Business Machines says the typewriter is a Royal Model 470 made in July 1972.  The back show that it was made in England. Here are some more photos.

The machine surprises me - it has elite type. I would have thought that any newsroom typewriter would have had at least pica type - the larger type is easier to read.