I bought a new Phantom II Supreme in 2013, and of course no manual came with it. I was able to get a PDF copy from Musical Surroundings at that time, but they are now no longer a Graham dealer. By all indications, this manual hasn’t changed at all since the Phantom 1, and should be what you need. The cover page lists "Phantom Tonearm" and "Model 2.2 Tonearm". The next page is "Phantom B-44 Specifications", which I believe indicates the 1st version.
I’m happy to email you a copy, but I’m not sure what message options we have here. You can contact me via my handle at gmail, or also same handle on head-fi via PM.
-- Mike