derSammler wrote on 2020-05-29, 08:05:
I have a Sun keyboard with a yellowed space bar as well. Not a single PC keyboard with that issue, though.
Oh, there are enough, take a look at this Dell:
And yes, I know it's basically the same Alps board as the SGI I posted before, but it happens on unrelated boards too -
Here's an IBM P70 keyboard:
Or here's another one from my collection, a Cherry-made Deko FastAction Keyboard:
That model M space bar is also marginally yellower than the rest of the keys for the same reason
Basically the main reason this is rare with PC keyboards is that they tended to be low-end all-ABS designs anyway. It's only with PBT keycaps that you run into this issue. Apple keyboards were famous for their quality (at least, prior to Jobs' return and the plastic fantastic starting with the iMac), with good Alps switches and nice white PBT keycaps - and after a few decades invariably yellow cases and space bars because they were ABS.