Just before the HP-67 was introduced I remember frequenting the UCLA student store on a near daily basis to see if new HP calculators had arrived.
One day I was surprised to find an attractive calculator, which I seem to recall as the HP-55 (with timer). Looking at the photos here in the museum of the HP-55, the keys are not as I remember them, or perhaps I was looking at a different calculator back then. In any case, I can't find that calculator. Basically, the keys pictured for the HP-55 (and -67) are essentially square but slightly rounded and angled in the front. That is how they are on my HP-67. However, the keys that I saw on that calculator back then were a bit larger, more rounded at the corners, and almost domelike on top. I know I'm not imagining this, and it was an HP calculator, but I can't find any photo of the calculator I'd seen.
Ideas?
-Dave