Name That Valve

[Dmoney]

So... after getting to two Laney AORs, I have a bunch of valves kicking about. I've just been taking a look at some and swapping them around in V1 in my Avenger.
The Laney chassis has a sticker on saying which valves it should have in each socket of the preamp.
it reads...
ECC83/7025 low mircophony
ECC83/7025 low microphony
ECC83/7025
ECC83/7025

Not all of them are branded or really marked. I thought they had all been unchanged since these amps were backup amps (im told).

here is a pic... to see it better you can right click and copy the image location into your browser i guess...
some stuff here is for comparison
from left to right...
Mullard ECC83, JJ ECC83S, Sovtek 12AX7LP... (the from the laneys) ...Philips ECC83, ? ECC83V, ? ECC83 72, then some unbranded valve that has 5512 on it, I have an identical valve to this also from the laney's which has 9312 on it, so i don't think the 5512 & 9312 are designations or a brand.
I'm after some insight into them,  the philips and the ECC83V look similar. I don't own any other valves that look like the '5512/9312'. The ECC83 72 valves look like they have similar plates to the Mullard, but the mullard doesn't have the getter on metal parts going down either side of the valve between the plates. The 5512 has that on one side. I kind of want to know if these are copies of other valves, or if the '72' is an actual 7025... and what the deal with the 5512 is?



Front shot...



Mullard, JJ, Sovtek



Philips, ECC83V, ECC83 72



ECC83 72, 5512/9312

[Frank]

There aren't that many factories in the world still making valves so I guess a true valve spod would be able to trace that particular tube without much trouble. It's common practice for companies like Peavey, Fender, Mesa and Marshall to buy job lots of unmarked valves then simply paint their own logo on the glass bottles.

If the manufacturer is too modest to put his name on the tube, it's a fair bet that's a cheap Chinese tube.

[Frank]

Frank you blithering idiot, the 9312 is an East German RFT tube

http://thetubestore.com/rsdecc83.html

EDIT: did I just call myself a valve spod?

[Dmoney]

Thats cool.
the 9312 looks VERY much like the one in that pic... part from it only has '9312' printed on it.
the 5529 (i wrote the wrong number above) is identical to the 9312, even down to the font and size of the printing.
So I guess 5529 is just another of these RFT's... I googled around but I could only find other laney users asking what this valve is.

The amps are both from around 1986. At least that is when the transformers were made. and they have consecutive serials, so I'd expect them to have similar stuff in. I might post up a pic of the EL34's from them. 

[Dmoney]

Right!
I think the philips and the ECC83V are rebranded/labelled Ei ECC83s from Yugoslavia.

So in the laneys it looks like i have
4x RFT EL34s (black base with a dimple in the top)
2x RFT dual triodes, 5529 & 9312
2x Ei ECC83 one Philips and one just labelled 'ECC83' though they have some small characters on the bottle that look like they used to be the same, but they are worn. They both have seams across the top and 'phallic' exhaust tips... i believe they are called exhaust tips?

4x Tungsram ECC83. these have little embossed plates on one of the getter supports, one is unreadable to me, the others are 65, 61, 56,

[Frank]

RFT EL34 rebranding ... the same tube labelled by seven different "manufacturers"

http://myweb.tiscali.co.uk/g8hqp/vpix/EL34pix.html

[Dmoney]

These are exactly like those but unbranded.

shame they ain't that well matched.
EL34 1 plate 527v idle 27.1
EL34 2 plate 530v idle 48.6
EL34 3 plate 527v idle 24.4
EL34 4 plate 522v idle 15.3