I purchased my Germanium transistors from SOVCOM.
http://stores.ebay.com/SOVCOM/Transi...=p4634.c0.m322
They have a great selection of various silicon and Germanium transistors. You will find the data sheets for each transistor listed so you can compare the spec's of the OEM Germanium transistor you need with the Russian transistor and pick out one that matches. It is very important that you have a good transistor tester. You are not necessarily looking for bad transistors, I didn't have any, but for the spec's of each transistor. People saying that Russian Germanium transistor are no good are making a blanket statement that is not true. They are very good transistors which, I understand, where in production into the early 1980's. The problem is finding the ones that will work. Which can be very difficult. I don't know if there is any good Russian replacements for the transistors in the FM tuner on a ZTO Royal 3000. Fortunately they are not usually a problem. But if you don't have a transistor tester you are shooting in the dark.
I have a couple of the cheap ($15.00 Dollar) Chinese semiconductor tester and they do a fairly good job. My go to tester is the Peak Atlas DCA55. Below is the UK site. the DCA55 is available at a much better price on Amazon. I am seriously thinking of upgrading to the DCA75 it does a whole bunch more and has a computer interface.
http://www.peakelec.co.uk/content/products.html