https://www.callmeoldfashionedvintageshop.com/products/vintage-c-1935-national-union-nu-78-collectors-vacuum-tube-6-pin-radio-pentode 2026-09-15T17:27:23-04:00 daily https://cdn.shopify.com/s/files/1/0828/2236/5468/files/8ACB1A7D-5482-468E-821B-24EACA45D067.jpg?v=1789431634 Vintage c.1935 National Union NU-78 Collectors Vacuum Tube | 6-Pin Radio Pentode https://www.callmeoldfashionedvintageshop.com/products/vintage-1930s-5-pin-vacuum-tube-top-cap-mesh-radio-tube-tacoma-retest-label 2026-09-15T17:27:23-04:00 daily https://cdn.shopify.com/s/files/1/0828/2236/5468/files/8C46D8C7-4377-4630-9DDC-7EBDD490C428.jpg?v=1789436047 Vintage 1920s Hyvac Screen-Grid Vacuum Tube | Probable Type 224 | 5-Pin https://www.callmeoldfashionedvintageshop.com/products/vintage-1930s-radio-triode-sylvania-type-37-vacuum-tube-green-oak-leaf-logo 2026-09-15T17:27:23-04:00 daily https://cdn.shopify.com/s/files/1/0828/2236/5468/files/9FCA0284-B4C9-4C82-B250-5E865B1D7C10.jpg?v=1789501382 Vintage 1930s Radio Triode Sylvania Type 37 5-pin Vacuum Tube | Green Oak Leaf Logo