Siemens ecc801s identity

[awymncwl]

Hi guys,

Happened to find these babies in my collections and wondering of the followings:

1. Are they really made by Siemens and when?
2. Searching a lot of similar Siemens ecc801s but never saw one with the same structure, namely diagonal support of halo getter??? short grey plate with 2 grid. With a 5 number mark at the bottom. 2 mira with an extra round plate connecting with those supports of the halo getter.
3. This is genuine Siemens, what is it characteristic/value/any good?

Much appreciate any input.

BR
Anthony

 

[Selmerdave]

Welcome to AK. Note that discussions about value are against the rules in this forum. It is a 12AT7 equivalent, which is not super commonly used but not unheard of either. Perhaps someone else can comment about the history of it.

 

[mrwood200]

2. Searching a lot of similar Siemens ecc801s but never saw one with the same structure, namely diagonal support of halo getter??? short grey plate with 2 grid. With a 5 number mark at the bottom. 2 mira with an extra round plate connecting with those supports of the halo getter.

Not sure what you have - any etch codes?
Your photos are pretty good, but the background is too busy. Consider taking future photos with a white background.
I got a handful of these tubes. All with 'CØ6 ≠XX code - only single mica'
see http://www.tube-classics.de/TC/Tubes/SieTel ECC81/ECC81.htm

 

[Mr Boochie]

Those appear to be triple-mica (top being a getter splash guard) W. German made Siemens-Halske E81CC.