The gains of Germanium transistors in a Germanium Fuzz Face circuit should be 70-90 for Q1 and 100-130 for Q2. That will give the best overall sound. Just be sure to get the collector voltage of Q2 around -4.5V to -5V so that it's biased properly.
I know that Analog Mike checks his NKT275 transistors according to RG Keen's method at www.geofex.com.