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The gold print is the earlier style print, the white and black print was a later version.(?)
Edits: 02/26/16 02/26/16Follow Ups:
I'm thinking the OP's tube pics are the real thing. They don't look like anything else out there.
For what it's worth, looks like the dealer provides a warranty. Not sure if that would apply if tubes are not genuine once he receives them and gets a closer look.
Jonesy
"I know just enough to get into trouble. But not enough to get out of it."
"Not sure if that would apply if tubes are not genuine"
You shouldn't need a warranty to get your money back for fakes.
--------------------------
Buy Chinese. Bury freedom.
If turned out to be fakes dealer would have a lot more concern than just warranty.
Cheers!
Jonesy
"I know just enough to get into trouble. But not enough to get out of it."
They are from dealer LANGREX in UK;
http://www.ebay.co.uk/itm/6550C-SVETLANA-WINGED-C-NOS-VALVE-TUBE-/262197871334?hash=item3d0c3602e6:g:dvwAAOSwYaFWc9g7
http://www.langrex.co.uk/
I don't see any internal differences and believe these to be genuine Winged C's
Links from original poster cjspu
They are from dealer LANGREX in UK;
http://www.ebay.co.uk/itm/6550C-SVETLANA-WINGED-C-NOS-VALVE-TUBE-/262197871334?hash=item3d0c3602e6:g:dvwAAOSwYaFWc9g7
http://www.langrex.co.uk/
Option
Original poster cjspu might also consider the original Svetlana with the square holes as per link at end. Would be more economical, and perhaps a better choice. (Assuming cjspu only needs a matched pair.)
Realizing there are no guarantees, a few more opinions will help cjspu make the best decision possible. Are there internal differences? Can the internal makings actually be counterfeit? But if going to that trouble of counterfeiting, why the different logo style?
Bottom line, let's help this new member out.
Cheers!
Jonesy
"I know just enough to get into trouble. But not enough to get out of it."
My understanding is the SV-6550B had round holes. These tubes tended to have thermal runaway issues. The SV-6550C went to square holes & use of better grid alignment tool.Photo is of the 6550B.
Edits: 03/02/16 03/02/16
Thanks Jonesy for the suport !
"(Assuming cjspu only needs a matched pair.)"
In fact i need eight 6550 tubes for my CJ Premier 12...
Here's a shot of my 1999 (50th week) 6550C. St Petersburg made.
Edits: 02/27/16
They look similar.The seller says that are;
6550C WINGED C SVETLANA
MADE IN THE ST PETERSBURG FACTORY
NOS TESTED NEW AND UNUSED
OTK56 (2006) DATE CODESAlso says that;
The gold print is the earlier style print, the white and black print was a later version.
Edits: 02/27/16
Svetlana and SED (Svetlana Electronic Devices) had already split.True St. Petersburg manufacture Winged Cs were SED by then.
My experience is the same as FL's. The five sets for my VTL amps since 2001 have all borne the SED label.
edit: darned spell corrupter on pad!
Edits: 02/28/16
I don't know what they are I've never seen them before, but they look nothing like the 6550c winged C tubes that I have which were made in St Petersburg in the late 90's/early 2000's. I have about 2 dozen of them, all with rectangular holes in the plates. The logo and lettering is in a smaller (thinner) fine gold andvery different from the heavy coarse letters and logo on your tube. The content is different as well. Not similar in any respect.
One more picture,
Is it just the picture or do some of the pics from that UK dealer show regular vs the mouse ear style getter? I'm thinking I've seen both on various 6550's but can't confirm if winged c ever had the mouse ears. Otherwise, asides from the unfamiliar logo, and mouse ears, the insides look genuine.
Another thing, New Sensor bought the use of the Svetlana name in North America, but then had the tubes made in the Reflektor factory (round holes). Svetlana square hole St Petersburg could only label their tubes with the =c= under the SED name for North American distribution.
The dealer you are questioning is in the UK, so it's possible logo restrictions are different.
Hopefully someone from the Asylum can help you better. I'm very curious how this plays out.
Maybe the dealer can provide you more info as well.
Cheers!
Ed
"I know just enough to get into trouble. But not enough to get out of it."
hey thanks !here in Europe its not easy to find and get svetlana 6550c winged c and buying from USA is expensive because of the taxes and the customs are very slow..
i also hope someone here in asylum could give more help.
Edits: 02/27/16
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