[Milsurplus] [ARC5] Some odd tubes - what are they?

[Ian Wilson]

Like this?

http://www.r-type.org/exhib/aab0122.htm

73, ian K3IMW


On Fri, Aug 7, 2015 at 4:30 PM, Kenneth G. Gordon <kgordon2006 at frontier.com>
wrote:

> I was out to an SK's shack today with his son and daughter looking over
> what
> is left there.
>
> In a box which contained 6 other identical boxes we found 6 tubes, NIB,
> which are labled on the outside 10E 7.5 - 36 VT-25.
>
> From a look inside the glass, it is obvious that they are triodes. The
> plates
> are fairly tall and there is a significant gap between the plate and the
> grid.
>
> The bases are not like anything I have ever seen though. They are a
> brown-bakelite like material with is almost 2" square with what looks like
> a
> silver-plated banana plug at each corner, one (or two) a bit larger in
> diameter
> than the others.
>
> The glass doesn't look quite like an ST shape either.
>
> I thought at first they were simply 10Ys or VT-25As, but now I don't think
> so.
>
> Looking for a 10E I find some european pentode online, which looks
> considerably different from this one.
>
> Anyone have any idea what this is, and how much it might be worth? The
> owners would like to sell them, along with a bunch of other stuff.
>
> Ken W7EKB
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