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Found this Valvo 329A, in my collection while Spring cleaning. Mil spec Wehrmacht stamp (1944).
Edits: 03/28/17Follow Ups:
Similar to this one
Surely you can do a bit better with a picture?
A I cut and pasted
B I would have to find it
C Looking now
Best I could do for now
Looks like a garage-built DIY tube.
I can't compete with the dead (Buck W. 2010)
$45 gets them out the door tomorrow. $50 gets them out the door yesterday (Byrd 2016)
Cowards can't be heroes. (Byrd 2017)
Nice tube. Why were they blue colored?
all the best,
I have an Arcturus Blue 45. Seems like I have to build a mono system. It is on display in my china cabinet. (I'm single)
Would that be a single ended, single sided, sound system with a blue playing blues?
all the best,
For a bit of color:
The tubes left to right are Sylvania W866A, Sylvania 829B, and Tungsol CTL703A.
I am not sure what these large tubes are except just plain large!
Transmitting tubes maybe?
If I recall reading somewhere, I think the Sylvania 866 has some mercury in it. When I searched my RCA tube books, I realized for the first time that they are all receiving tube manuals.
These are the oldest that I have. Unfortunately, for display only due to open filaments.
They are european, so not from deforest. And they probably pre-date his commercial offerings.
I am guessing that the other two tubes are from the same or another French company of the same time period. I am cheating by using the vacuum tube history book pictured below.
I do love alpha Al's pictures.
I don't know much about these. I wondered what "Metal" meant. Didn't realize that was the manufacturer.
The tube in the center was made by Moorhead.
four pin tubes, as Moorhead was contracted in WWI to supply the British military who had been using the French tube designs.
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