SAIL Keyboard is a variant of the Knight Keyboard.
(SAIL = Stanford AI Lab.)
It's for lisp machine.
[see Lisp Machine Keyboards]
Note the short spacebar.
[see Typewriter Spacebar History]
[see Tiny Space Bar on Japanese Keyboards]
Also note, 0 is placed to the left of 1.
See this thread on a bit history of that.
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If you have a question, put $5 at patreon and message me.