It's
pretty rare. I have one too.
I've seen and heard of more straight 8s than I have 8/S
PDP-8/Ss used to be quite rare, but they have been popping out of the
woodwork for some time now. I would venture to say they are now more
extant that Straight-8s.
Small is survivability.
PDP-8/S was my first computer, purchased for five bucks from a guy I
met at a hamfest. That was thirty years ago, and started me on this
whole computer history path. It is temperamental, but still works.
--
Will