Wow, that is one huge collection of sets, nice to know that they are being saved and preserved, would love to see them myself! As far as I know here in New Zealand, there is no one collecting old mono/colour sets apart from yours truly. If there are other NZérs lurking here that collect old TV's please introduce yourself!
Unfortunately most mono sets have pretty much vanished in these neck of the woods, but some do surface from time to time, I have got most of the service manuals/data for these sets and there were quite an array of different models/versions some were NZ desgined and others were copied varaints on an overseas chassis and the likes, but the majority are probably extinct by now...shame really..oh well I makes me appreciate the ones I have got though... and I have contacts who keep a look out for me too so my bases are pretty much covered.