The Atari 1200 and the finally Atari 1200XL have no real differences accept
in the label and the casing. The label lacks the XL (eXtended
Line) designation and the case is a smooth finish instead of the
rough finish on the sold versions of the XL's. The only
other interesting note is the fact that this system was modified, whether
it was done in-house by Atari or done by someone outside of Atari along
the lines of the Brent Borghese 1200XL OS modification are unknown.
However this Atari 1200 has Atari 800 OS ROM's contained within it instead
of the Atari 1200XL ROM's, also the 800 piggybacked ROM's have a handwritten
neon green label stating 11/16/82 on them.