Schindler RT
These fixtures were used by Westinghouse and then Schindler after they bought Westinghouse. These were commonly found on later Westinghouse and early Schindler installs. These fixtures are actually Adams, so the wiring of them is really simple. See my Adams page for more projects with Adams fixtures.
This particular project was simple since it is just like wiring Adams. However, I was missing a small part for the buttons themselves, and I was able to 3d print a new piece to replace the missing part.