I have been in this college classroom building for many years. I also took courses for my major in this building many, many years ago. I would not be surprised if this same sign was there and no one ever checked the braille.
I happened to pass by on the way to teach and just looked. Now I don’t know old code, and this could be old code, but it should have been updated. It reads:
levble 1 east stair
serves fl??s 1-4
exit at levble 1
Does anyone know enough old code to confirm the two ??, 4-5-6 ow, was a contraction for ‘oors’ or that ‘ble’ was once a contraction for ‘el’? I am guessing these were really errors, but you never know!