6463 GE Medium Mu Twin Triode Tube. Designed for use in industrial equipment as characteristics of stability and long life are required. New old stock. No longer available for export. MFR: GE.
7B4 High Mu Triode Tube. Designed to function in both AC and DC powered receivers. MFR: Raytheon, Zytron, Philco, Hytron. SKU: 7B4. New old stock. No longer available for export.
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