From: Jon Elson 
 > I interned at IBM Bermuda, and they had a 360/20
as their main service
> bureau machine; it had (IIRC) ... a 4301 printer. 
  I'm guessing, maybe, that would be a 1403 printer?
Ah, right you are! The old grey cells are, well, old! ;-)
Those printers had an amazingly long life! They were first introduced in 1959
with the 1401 computer, and, like I said, the brand spanking new System 3
they got in ca. 1976 came with one! I wonder when IBM stopped producing
them?
        Noel