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musical instrument details

18x Svetlana SED 6550C/6550/ RARE/NOS/MATCHED pre-Winged С/ S-logo 2000yr tubes

Estimated price for orientation: 699 $

Category: Vintage Tubes and Tube Sockets
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Description
Condition: New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. See all condition definitions- opens in a new window or tab ... Read moreabout the condition  


Original Svetlanas made in St.Petersburg, Russia in 2000 (42 week). These pre-date Winged C and are the real Svetlana tubes. Boxed in original box and test paper. Price per box!2000 year and golden S-LOGO.I tested the tubes, they are great. There is some differences between the tubes but the specifications are quite close, less than 3%. Another person can says it's MATCHED :).These are said to have more vacuum than the later Winged C version which isn't as good as these.These are the original Svetlana with 45 degree angled getters - the best ones ever made! Brand new never used NOS 6550 with the rectangular holes - same design adopted on the Winged C version. These also have the 45 degree angled getters, gold coated grids and specially coated screens. HISTORY OF S-logo and Winged =C= logo- Around 1995 appeared the brand SVETLANA ELECTRON DEVICES INC. on the tubes. - In May 1996, the stylized S-gold logo has been saved. It appears on the tubes above the mark Svetlana Electron Devices Inc. - In mid 2000 demise of the logo-S on the tubes St Petersburg and re-emergence of the golden logo-C (= C =), and until about 2012. - From 2002, the stylized logo-S gold or white and the mark Svetlana Electron Devices (with and without Inc.) began to be affixed to the New Sensor tubes Xpo-Pul Saratov. If you need another customs value for shipping please ask me before buying.