Who made these tubes?

MrCoolGuy

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Who made these tubes for Realistic? They are grey short plate 12ax7's with gold pins. They have a circular getter at a 45° angle. I know Mullard and Tungsram and Matsu. all made tubes for Realistic...
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MrCoolGuy

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Yeah, looks close... no gold pins though.
This person claims Mullard
Also a lot of people claim these are German RFT's... hard to be sure.
They sound great though.
 

Wally

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Yeah, looks close... no gold pins though.
This person claims Mullard
Also a lot of people claim these are German RFT's... hard to be sure.
They sound great though.

Regarding those Realistic branded tubes in that ad and which are claimed to be Mullard, I don’t see the Mullard codes. That paint on the tube was all done here in the U.S. by Radio Shack, correct?
I have some Realistc branded tubes….I’ll compare what I have. I also have s9me Mullard, and they always have the codes.
 

schmee

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Who made these tubes for Realistic? They are grey short plate 12ax7's with gold pins. They have a circular getter at a 45° angle. I know Mullard and Tungsram and Matsu. all made tubes for Realistic...
View attachment 939597 View attachment 939596
Interesting as the plates are not exactly short or long really. Kinda medium.
Looks a lot like the RCA's I sold last year. Can't see the halo though on this pic. But plates look right.
They are not like the RFT's I sold last year.

I sold some Gr Britain labeled RCA's also, and they didn't look like that either.
 
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Wally

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Interesting as the plates are not exactly short or long really. Kinda medium.
Looks a lot like the RCA's I sold last year. Can't see the halo though on this pic. But plates look right.
They are not like the RFT's I sold last year.

I sold some Gr Britain labeled RCA's also, and they didn't look like that either.

The plates in that RCA are very different from the plates in that Realistic.
That tube with ‘Great Britain’ screened on it would have to prove to me with more information that it is from Great Britain. I suspect that it was a ‘Grey’ import from the other side of the Iron Curtain during the Cold War.
 

MrCoolGuy

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Yeah @Wally, they dont look like any mullards I've ever seen. There is nothing on them except the paint. I have two.
They came out of this 1964 Deluxe (non-reverb) that I'm restoring right now.
IMG_2944.jpg
IMG_3441.jpg


Extremely dirty (yeah, thats a dirt dauber nest), but unmolested except the two bass pots and the speaker. Pretty amazing. Still has the original filter caps (not for long)... also came with two clear top RCA 6V6GTA's and a Sylvania 5U4GB... which all have 1964 date codes... probably came with the amp.
 

MrCoolGuy

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On these, the halo getter not on a post, it is attached to the Mica. Also, it has a seam or line across the top that im not familiar with. Can you see?
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schmee

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The plates in that RCA are very different from the plates in that Realistic.
That tube with ‘Great Britain’ screened on it would have to prove to me with more information that it is from Great Britain.
I suspect that it was a ‘Grey’ import from the other side of the Iron Curtain during the Cold War.
IIRC in my research they traveled a lot! E. Germany to Gr Britain finally to be labeled RCA! 🤣
The Realistic plates look very similar to me. 3 ribs , 4 rectangular slots, medium length etc. But not identical for sure.
 

Wally

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Yeah @Wally, they dont look like any mullards I've ever seen. There is nothing on them except the paint. I have two.
They came out of this 1964 Deluxe (non-reverb) that I'm restoring right now.
View attachment 939891 View attachment 939890

Extremely dirty (yeah, thats a dirt dauber nest), but unmolested except the two bass pots and the speaker. Pretty amazing. Still has the original filter caps (not for long)... also came with two clear top RCA 6V6GTA's and a Sylvania 5U4GB... which all have 1964 date codes... probably came with the amp.

are those mud dauber nests there???
 

schmee

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Wow, flood victim?
With that strong seam in the glass on the top of that last tube shown, my guess is it may be Japanese. They often have that.
 

Wally

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Okay…here are pics of two Mullard built in Great Britain. The plate structure is the same as the tube you show us, Cool, and the seam is on the top. However, these two tubes here in my stash have what I consider to be original Mullard printing and codes on them. The getters also do not exhibit the same angle as in the tube in your amp’s tube. This identification is made more difficult because iirc the Mullard equipment was sold to a Japanese concern. That equipment would result is similarities, correct?
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MrCoolGuy

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I have heard that Matsu aquired Mullard and Amperex's tooling/equipment. Thats probably a pretty educated guess what my tubes are. I'll probably start a thread on the restoration of this '64 Deluxe separate from here.
 




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