Saved for later - I once restored something similar, an 11/23. The boards all checked out, it came from an industrial environment and every card edge and connector needed a good solid cleaning, and I was amazed when it fired up. Neat machine to work with, half because of what it was and half because of what it controlled - a big Brown & Sharpe coordinate measuring machine. Actually got to use the FORTRAN I learned in HS and college.