21AUP4 wanted

[GelosoTV]

Hi folks!!
I'm a new forum entry, this is my first message. I'm an italian boy, I'm 17yo. I like collecting and particulary repairing vintage radio and television. I've just restored a vintage italian TV set, a 1957 Geloso model GTV1014 television.
Here you can see some photos and videos:
http://www.radiopistoia.com/geloso.htm
(about the end of page, click on the photo to get the others)
http://www.youtube.com/watch?v=EbwOJICxTlI
http://www.youtube.com/watch?v=gToovC-w7Xo
It works perfectly, but I'm looking at a NOS 21AUP4 (or 21AVP4, they're exactly same) to have a stock. For the delivery..... we're seeing later. Here in Italy and Europe this type of CRT is unobtainable.
Thanks.