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For 6AS7G tube rollers here ..... - Page 110

post #1636 of 1644
Quote:
Originally Posted by JamieMcC View Post
 

 

They are worth a bit of a gamble I won a pair of GEC curved bases earlier in the year which where working equipment pulls the seller was in London and would only do collection only, luckily my brother worked close by I cant remember if it was £60 or £80 the pair but they both tested strongly at NOS levels on my Hickok tester sometimes you just get lucky ;-)

 

 

Curved base AND testing strong? Boy, did you strike gold - 2 of the 4 'ex equipment' Osram/GECs I received were curved also...but all 4 were dead or dying! :(. And another pair was lost in the post/mail - you obviously had MORE than your fair share of luck, methinks!! :wink_face:. Luckily, the supplier didn't quibble at all and is still in fact trying to find some more for me...but 'needle in a haystack' comes to mind. And I suppose I did have my fair share of luck as he let me have an immaculate NOS GEC CV2523 (straight base) for £60...can't complain, lol!!

 

 

ps. Don't know if I'm imagining it, but with this tube in situ I swear I'm getting an even more dynamic sound than from its prior 'NOS' tube I got from Italy (both Italians had some of the printing rubbed, and were nowhere near as immaculate-looking...:confused:...perhaps a result of testing for military use?...mmmm...).


Edited by hypnos1 - 11/10/14 at 8:58am
post #1637 of 1644

All these look to me to have been manufactured in Mullard's Mitcham factory. Does anyone know if Philips manufactured this tube in Holland as well?

 

 

$_57.JPG

post #1638 of 1644

I have yet to see a Dutch one.

post #1639 of 1644

No Hollands in my (growing) collection

post #1640 of 1644
Quote:
Originally Posted by gibosi View Post
 

All these look to me to have been manufactured in Mullard's Mitcham factory. Does anyone know if Philips manufactured this tube in Holland as well?

 

 

$_57.JPG


Several of the Mitcham 6080 I have owned have been flashers think I have three or four with differing construction in the getters. 

post #1641 of 1644

Hi Guys, 

 

Please help me to identify this tube. It's 6AS7G.

JAN - CAHG - 6AS7G

MADE IN U.S.A.

CHATHAM ELECTRONICS

 

CODE: 422

 

The code is a bit strange to me, because I know Chatham was a part of Tung-Sol and they sometimes invented some little thing to make a difference from them, but - Tung-Sol factory code is 322. The next one 423 is Northern American Philips. 

Is 422 just a Chatham factory code?

 

Thanks a lot!

 


Edited by fallow81 - 11/15/14 at 2:09am
post #1642 of 1644

My guess is that 422 is the date code: 1954 week 22. And I believe that Tung-Sol acquired Chatham at a later date, so Chatham was an independent company in 1954.

post #1643 of 1644

Thanks a lot Gibosi

post #1644 of 1644
Quote:
Originally Posted by fallow81 View Post
 

Hi Guys, 

 

Please help me to identify this tube. It's 6AS7G.

JAN - CAHG - 6AS7G

MADE IN U.S.A.

CHATHAM ELECTRONICS

 

CODE: 422

 

The code is a bit strange to me, because I know Chatham was a part of Tung-Sol and they sometimes invented some little thing to make a difference from them, but - Tung-Sol factory code is 322. The next one 423 is Northern American Philips. 

Is 422 just a Chatham factory code?

 

Thanks a lot!

 

The 1946 code list (see http://audiophool.com/Techno.html) gives 422 as Crimp-Seal Products Co., Chicago 10, Ill. Yeah, not likely. But CAHG is Chatham, and these military codes are more trustworthy anyway.

 

Quote:
Originally Posted by gibosi View Post
 

My guess is that 422 is the date code: 1954 week 22. And I believe that Tung-Sol acquired Chatham at a later date, so Chatham was an independent company in 1954.

 

Probably so. That date is May 20, 1957. That was surprisingly easy to find. :D

 

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