They are doing this also for the science version, the 15C. I bought a 15C in the 1980s, and have enjoyed it ever since. It is like a rock. Despite being treated roughly over the years, nothing is wrong with it apart from some dents in the metal parts and my name, scratched on the back. I suppose I've replaced the batteries a couple of times, but that's it. This thing just refuses to die. The main thing is that the ke…
I somehow got my 15C's slip case wet and so the calculator sticks out the end a wee bit. And a couple of the rubber feel fell off and got lost. Other than that, it works perfectly despite being treatly roughly as well. Like yours, the keys are still in Day 1 condition. And like yours, I've changed the batteries maybe two or three times since I got it back around 1984, which is unfathomable to me.
It is probably the finest piece of electronics I've ever owned.