SAIL Keyboard. (SAIL = Stanford AI Lab.) Dated about before 1974.
SAIL keyboard is for the Stanford AI lab Datadisc and III displays connected to the PDP-10 computer running WAITS.
Note, SAIL was started in 1963 by John McCarthy (inventor of LISP programing language) , after he moved from Massachusetts Institute of Technology to Stanford.
SAIL was one of the leading centers for AI research and an early ARPANET site.
[see On Lisp]
[see Lisp Machine Keyboards]
Note the short spacebar.
Note, 0 is placed to the left of 1. See this thread on a bit history of that. https://twitter.com/mwichary/status/1017272422402162688
Lisp Machine Keyboards
If you have a question, put $5 at patreon and message me.