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Mazda tube

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Hi
this tube was given to me, but i never saw one like this ECC81, it has the plates made of a very bright material and has 5 stars stamped on it...is it a real Mazda tube? and is it any good ? special ?
thanks
 

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Together with this mazda, also came 2 of this, wich i dont know the type, could be ecc81 or ecc83, it is visible the brand CEI , and sorry for the bad Photos...do someone knows this one ?
Thanks
 

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CEI was an English rebrander. Could be anything. However, if you got dyslexic and the tubes are really IEC. That was a legitimate brand used by Mullard. Look for other etched codes or marking on the tube and see if you can get a better picture showing the plates and getter ring. Also, you can compare to pictures located at: 12AX7 ECC83 E83CC ECC803S 7025 CV492 CV4004 CV4035 M8214 M8137 6057 B339

btw, the Mazda "Chromes" are highly regarded.
 
It is really CEI written in the tube , but my eyes are getting a bit out of focus !!! in the back of the tube says 5814 A and USA, so it was made in the USA ?
 

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Its a Sylvania manufactured 5814/12AU7. Common tube. nothing special. probably manufactured in the late 1960's or early 1970's. Like I said earlier CEI was an english rebrander and it could be anything. I have some Ei made ECC83 (Yugoslav) branded CEI. Good tubes.
 
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