I haven't posted this in Great Finds, as I don't know if it's anything of real interest—do you?
Vintage AT&T Keyboard 1991 5 pin #39953 CLICKY BIN $39.99 + free US shipping
It has an AT connector, and double-shot keys. The seller says it's "clicky", but that can mean little, as most vintage RDs sound "clicky" compared to modern membrane keebs. Over to you then, mates.
LOL—it took me a while to figure out why the 3rd photo, showing the back label, wouldn't appear here. It's because the random image URL contains the transposed letters of a swear word, which GH replaced with asterisks (breaking the URL, obviously). Anyway, you can see the label on the listing page.