OK I'm claiming the prize now and it's only Friday! Top this: Not one, not two, but THREE Tektronix 31 calculators, all NIB! Found these at a garage sale. They appear to be from the estate of a Tektronix employee that bought them in Beaverton and shipped them to Orlando when he was transferred here. Two are "normal" 31s, the other is a different color and is marked "Coulter Model 43 Data Converter". It has options 1, 4, Pa and Pb installed. I've posted a couple of pictures of it at <http://home.cfl.rr.com/rigdon14/tek-31/>. I haven't checked out the other two yet but they also seem to be well optioned out and have what I think is the interface to connect the TM500 modular instruments. Joe :-)

OK I'm claiming the prize now and it's only Friday! Top this: Not one, not two, but THREE Tektronix 31 calculators, all NIB! Found these at a garage sale. They appear to be from the estate of a Tektronix employee that bought them in Beaverton and shipped them to Orlando when he was transferred here. Two are "normal" 31s, the other is a different color and is marked "Coulter Model 43 Data Converter". It has options 1, 4, Pa and Pb installed. I've posted a couple of pictures of it at <http://home.cfl.rr.com/rigdon14/tek-31/>. I haven't checked out the other two yet but they also seem to be well optioned out and have what I think is the interface to connect the TM500 modular instruments. Joe :-)