This system looks pretty interesting, though pricey. I'm thinking it is
going to be a development machine as all the switches and display would
not probably have been on a production machine.
I don't think National made many minicomputer format machines, in their
history, someone correct me. That might make this pretty rare on that
front as well.
thanks
Jim
Beautiful-1974-NATIONAL-SEMICONDUCTOR-COMPUTER-model-imp-16p/
http://www.ebay.com/itm/252700755919