From some more research I have done these were intended for the Education and in the education line the six-color logo was rarely used. Additionally I was able to locate another picture of an identical poster @:

http://homepage2.nifty.com/56thWAREHOUSE/APPLELOGO/LOGO07(POSTER1).html



I have been looking for several hours and this seems to be the only other picture of this poster. So, either it is extremely rare or could still be a fake.

HELP!!!