Pair of Sylvania USA  6L6WGA (5932) Vacuum Tubes.  Ruggedized tubes with thick glass, black plates and large brown bases.  Mid 1950s manufacture based on research.  Quite possibly NOS matched pair, but I can't verify that as I no longer have the ability to test tubes. Tubes are untested.  Tubes are packed in genuine Sylvania boxes but I don't believe the boxes are original to the tubes based on the style/era of graphics.  Free shipping to lower 48 via USPS Ground Advantage.