Sylvania 6SN7GT Staggered Black Plate "Lawsuit Tube (RCA)" Early 1950's

Description: Considered by some to be the best sounding 6SN7 ever made. Sylvania only made these for two years as they were issued a "Cease and Desist" order for patent infringement by RCA. All were made at the Sylvania Huntington, WV plant in either 1951,1952 or 1953.Testimonial from one happy owner, "The Sylvania 6SN7GT tubes with flat, staggered plates are NOT from the 1940s. I got this idea from Tube Depot, but it was wrong. These "lawsuit tubes" were only made in 1951 and 1952. (Sylvania was sued by RCA for using the flat, staggered, ladder plates without a license from RCA, the patent holder.) These tubes are still my favorites, though the Ken Rads with staggered plates are a close second best, and I swap between the two." All have been tested on Hickok 539C for shorts, quality, life and micromhos. Every tube listed passed all tests. None have wobbly glass or otherwise questionable bases. A single purchase is for ONE tube.The drop down menu displays the price and available quantity of each tube. Tubes sold based on test results of my equipment, your results will be different. Sorted TEST RESULTS:Note: Minimum acceptable readings before discarding a tube are 1640/1640. Expected test results for a new tube are 2600 or higher. Sku #Brand/Label539c 1539c 2Internal MatchDate codeYearSku5Motorola332033000.60%C1H195152Sylvania Green33003550-7.58%352195321Sylvania Green310029006.45%C1H195113Motorola29003300-13.79%C1H195136Motorola29003200-10.34%G2H1952670Sylvania Green26502680-1.13%E1H1951707Sylvania Green255025001.96%A1H195174Crosley22502500-11.11%D1H19514 We offer FREE Shipping on these vacuum tubes. If you are unhappy with the tubes for any reason we offer free returns. Returned tubes must be returned in the condition they were sent including any original or aftermarket tube boxes used. The lettering on the tubes MUST be the same and not damaged or smudged in any way. Free Returns in the USA. International buyers must pay return shipping. In general, we do not clean the tubes prior to shipment. Clean tubes with great care as it may damage the lettering. International buyers please be advised we have NO control over the time or method of delivery with the Ebay International Shipping program. It varies from country to country.

Price: 37.95 USD

Location: Lakeside-Marblehead, Ohio

End Time: 2024-08-28T13:39:23.000Z

Shipping Cost: 0 USD