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Need Help Identifying two 12AU7/ECC82 tube

jgriffter

jgriffter

New Member
Hi, hoping I might get some insight from the tube folks here.

I was looking for a couple of 12AU7/ECC82 tubes for my preamp, preferably some Valvos. I came across these two for sale - made in Germany, no date code identification on either at all (I have a pretty good tube collection and know how/where to look). Horizontal O getter, ladders, smooth glass tops. Thought they might be Tele's but no bottom diamond marking on either. Seller does not know mfg either but they test strong.

I know it is not much to go on but hoping someone might be able to help identify/age these. Thank you for the help!
 

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They look like Amperex made in Holland. Short plate, the etch code at the bottom will shed more light.
 
Hi-FiGuy said:
They look like Amperex made in Holland. Short plate, the etch code at the bottom will shed more light.
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Amperex usually have 4 seams on top (not always though) and if the Made in Germany label on the two in question is real........well you know.
 
Thanks for the replies. Amperex was my guess but the top glass has no seams and they are marked Made in Germany. No etched codes on either. I was hoping they were Valvo Hamburgs but not familiar with any Valvos that do not have a slanted getter.
 
I see etch codes on one of the tubes in the picture, delta 7 62? It's hard to see. It's right under the made in germany.
 
Hi-Fi Guy, thank you. Yes I saw that too but the only truly legible mark was a delta symbol. Neither of us thought the other numbers were truly legible (likely it's our old eyes!). I think you are right that they are likely Amperex. The Germany threw me. Think I will give them a try.

Appreciate the insights.
 
Phillips family tubes are often branded and marked in places they didn't actually come from. I have some Amperex Holland tubes that are actually Mullard Blackburn production. Pretty sure i have one that was actually Valvo Germany but is marked Amperex as well.
 
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