FYI - the key codes I measured previously for Data General and HP have been cut, tested, and verified. Amazingly, my measurements were correct. So to summarize:
XX2247 Code: 5173757 Use: DEC PDP-8 (all varieties), PDP-11 machines that do not use an ACE blank (11/24, 11/44) XX2065 Code: 1353757 Use: Data General Nova (800,1200,1220,2,3) Eclipse (S/130,S/200) XX2946 Code: 4557457 Use: Hewlett-Packard 2100A/2100S NOTE: The codes above are listed 7-1, and all key cuts are center offset. Still unconfirmed or need more information: Cromemco: XX4306 Code: (Mike Stein was going to measure his cuts) Use: Cromemco Systems CS-1/CS-3/CS-100 J