April 1, 2024
RARE VINTAGE AUDIO TUBES 6550A MC275 QUAD SYLVANIA RCA
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Lot of 4 Old Stock American Electron Vacuum Tubes model 6550A USA. These are all exceedingly rare model audio and Hi-Fi for Fenders, Gibsons, Magnatone, Ampeg, Scott, Marantz, McIntosh, etc. There are 3 silkscreened Sylvania's and 1 RCA (larger capsule), although they are the same construction, getters still shiney. All test strong on my Hickok 539A. Free shipping on " Buy it Now" purchases only!
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