14th April 2012, 8:55 AM
The MK3s were produced in low numbers, and further they're a European thing. Apparently they are pretty tough to find. Usenet is still pretty useful sometimes.
"On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question." ~ Charles Babbage (1791-1871)