Hello, these are some of my favorite sets:
1950 Philips TX500: the first commercial TV Philips built with the current (until digital conversion crap) 625 lines standard. Yes, it's quite uncommon in Italy, only 6 are known to exist and it still works really good after a restoration. It uses a 12" round tube, quite similar to the American 12LP4, but built by Philips. I got this set with an almost NOS crt. It uses the smallest horizontal output tube produced (except for the UL44, but this was never common), a noval based affair called PL81
1954 Geloso GTV1002: the successor of the first produced chassis that must be considered a prototype, the GTV1001 from 1952 (I have this too), it was completely built in Milano, comprehensive of all the components, CRT excluded. Geloso had an agreement with RCA, so all the CRTs are produced in the USA, it uses the synchroguide circuit. Needless to say, I'm still amazed it still works as good.
1955 Radiomarelli RV102: based on a GE chassis with few modifications, the most noticeable being the equipment in the horizontal scanning section (it employs 2 6AV5GT and 2 6AX4GT), this TV must have been quite expensive in it's heydays as we had tubes tax and it has a gorgeous wood cabinet. Thanks to the help of my friend Don Lindsly, now it has a brand new 21EP4 CRT and the image produced is simply stunning. Too bad the a**hole seller packaged this TV really, and I mean really bad, so it sustained quite a lot of damages to the knobs and cabinet
Yes, as Sandy G says, this is pure SICKNESS. Just look at the photo called "laboratory"
Cheers
Giulio Maiocco