Dennis,
I browsed some days ago your wonderful collection of non-HP RPN calculators and noticed that you feature only one product from Texas Instruments. I agree that the RPN module for the TI-59 was just a marketing gag but - don't underrate Texas Instruments.
We all remember the TI-88 and still speculate why it failed. Within few years TI bounced back and introduced some really interesting products. You remember the TI-78 and the TI-81?
Between these two calculators and the mind-boggling PLT SHH1 another TI project kept under the radar screen!
What I learned so far: It is based on Far Eastern technology and was tested probably only on the European market. A fellow collector in Hungary offered me recently an untouched product and I couldn't resist! I am not sure how this rare calculator made it over the iron curtain but it finally is back!
Dennis, Wall Street ruined the economy - I have to sell this unbelievable piece of Texas Instruments history on our favorite auction site. I can't think about a better place than your home for it.
LINK to your auction. Your bid is welcome.
Regards,
Joerg