IBM 5100 to 5110 Transitional Model

Wayne Smith wayne.smith at
Sat Feb 3 17:15:02 CST 2018

Has anyone noted this listing of what the seller is calling an "IBM
5100" on Ebay?

While it is listed as a 5100, it lacks the 5100 badging on the front
center panel (to the right of the power switch).  In addition, the
indicia on the bottom
indicates both models 5100 and 5110, and the KVA is listed at 0.4
whereas 5100s are 0.336.  Compare the typical indicia on the bottom: 

The serial number is in the 5100 format of 10-1XXXX, but this unit has
the highest serial number I have seen on a 5100 (10-15687). 

I am guessing that this is some sort of transitional version or
perhaps a 5110 "prototype".

Any thoughts?


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