I purchased this SGI Granite, which was used at a college with an SGI machine, intending to swap it into a new case. I completely cleaned the plate underneath, put on doubleshot keycaps from a Focus, but the new case dimensions were wrong and it didn't fit.
So now I'm selling it; comes with both the doubleshot keycap set on the board and the original SGI Granite keycap set. Asking $60 shipped for a quick sale. Pictured below with original keycaps.