42.
I have seen so many keyboards, but only this one – from a strange titling device meant to be connected to your TV – treats uppercase and lowercase exactly like all the other shifted and unshifted symbols. (With the exception of keyboards for kids, I assume!)
43.
Back in the day, keyboards were so expensive that you often started on a “training” keyboard that came without the machine connected to it. Here’s a training keyboard for a Linotype, which is itself a fascinating machine.