Vintage Hughes computer chip in lucite or lucite-like resin, personalized to one Frank E. Keister and dated 1958 - 1989.  The block measures about 3-1/2" x 4" x 1-1/4". 

Condition:

Lucite appears to have toned to amber.  Bubble noted at bottom.  Personalized.   Please see all pictures that display all sides including the base or underside that shows apparent waterstain to the material backing the chip.