It is the same as Schuetzen, had that verified by Graf's.
In general, cleaner than Goex but not as clean as Swiss. Also in general, equal to or sometimes a little less than Goex in power department; seems to vary by lot; I had one sample of 3F that was more potent than Goex 3f. I have used it and liked it for most part (many pounds of 3F), as have others, but it does seem (at least most of the 3F I've used) to cause trouble in high temperature, high humidity situations -- the fouling turns to runny goop that sets up like concrete fairly suddenly in the worst places. At least that is what it seemed like to me, when I switched from Goex 3f to Graf's 3f one summer. As long as the temp. is moderate (<90dF), never noticed any problems. It is worth trying -- nothing terrible will happen. Just don't expect Swiss type results in terms of energy, and it may not even be as energetic as some batches of Goex.
