"During the time the MP2100 was being readied for market, the Apple logo-shaped molding on the face of the 2000 was changed to a circular indentation that was intended to hold the Newton Inc logo. By the time the units arrived from Sharp (the Japanese manufacturer of the original MessagePads and the MP2000/2100), Steve Jobs had reabsorbed Newton back into Apple proper. The final MP2100 cases have an Apple logo painted in the slightly wrong-looking round spot, while the Newton logo and the words "Newton Technology" are silk-screened in the upper left face of the unit. This obvious patch job is a constant reminder of what Newton might have been."

http://www.pencomputing.com/frames/newton_obituary.html