1 X NOS 6SN7 National Union - Smoked Glass - Matched Sections Early 1940s

1 X 6sn7 National Union - Smoked Glass - Early 1940s

1 X Rca 6sn7 Vt - 231 - Smoked Glass - Matched Sections - Tests Nos Early 1940s

1 X 99 (199) National Union Tube Very Strong Nos Nib

1 X Nos Nib National Ssr - 6/5r4 Solid State Replacement For 5r4

1 X Nos 6sn7 Gtb Rca Black Plate Twin Triode - Beefy - 539c - 1950s

1 X Nos Jan 6v6gt Rca Smoked Glass Black Plate Pentode - 539c - 1952

1 X Nos 6sn7 Rca Staggered Black Plate Twin Triodes 539c Matched Sections

1 X Nos Jan 6sn7 National Union Twin Triode Smoked Glass - 1952 Vintage