http://www.shopgoodwill.com/viewItem.asp?ItemID=12151291
maybe someone can useit.. just passing the info along..i know nothing about it..very unusual for goodwill to have it

if you do a search fore tube some groups of receiving tubes come up...have fun!!

That looks like a rectangular metal cone CRT. Cool!

http://images.shopgoodwill.com/28/12-27-2012/sa81925591227-eS.jpg

Wonder if it's under Vacuum? Can't see the getter.

"This item ships via UPS" Oh, never mind then, I can get broken glass for free.

[QUOTE=bandersen;3057776]That looks like a rectangular metal cone CRT. Cool!

The label shows tube # 17TP4. Electrostatically focused, used in some Motorola's and a few others. Lamont tubes were sold in Milwaukee for a short time and they were among the best rebuilt CRTs.
I never saw a 15" metal tube.

I'm sure dieseljeep is correct. I think Goodwill just listed it as 15" because that was approximately how they measured the screen diagonal with a ruler, not because they knew something specific about the CRT. Keep in mind that CRT screen sizes used to be based on the dimensions of the entire tube envelope, not just the actual screen area. So, 15" would seem perfectly reasonable for someone describing it who isn't otherwise familiar with the item.