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92.80.232.196
Hello! Someone can tell me more info about this tube (factory, year)
THX !
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I have here an old British Tungsram long grey plate 12au7. Only R or K from the wrinkle glass code. Possible Mullard Mitcham ? Gorgeous sound came from this tube
My ecc82 it`s labeled Pinnacle. But Pinnacle it is not a valve maker...so ? Some Pinnacle`s have specified ,,foreign,, but this not.
http://www.tubes.rs/Tubes/NOS/Audio/PreTriodes/ECC82/ECC82_12AU7_Mullard/ECC82_12AU7_Mullard_Great_Britain.html#prettyPhoto
My tube its identical with this...but the code it`s a mistery
It is BEL India tube. Code is not a mystery.
Many BEL tubes had two letter year e.g. 72 for 1972 spelled out in addition to the Philips tube type code e.g. GF = ECC82. Etching style is typical BEL and so is the internal construction. It would look similar to Mullard/Philips because BEL made tubes with Philips/Mullard tech including tooling from early 1960s.
Looks like BEL India early 1970s production. BEL used this kind of weird nomenclature for the etched codes slightly different from other Philips plants. Etching style is also BEL for sure.
Philips. Eindhoven Lab Group, Holland (7). Not sure what the "2" in 72 means.
Gf = ECC82. 45 = April, 1955 (65) (?)
Can you post another image to show the plates front on so a bit easier to identify please?
ok
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