(!!!!) (Best Pair) CEA-5993 Bendix NOS 1950”s (52/40 x 4 sections)

1 pair) CEA-5993 Bendix NOS large size original boxes 1950”s

1 tube) 52/40 and 52/40

1 tube) 52/40 and 52/40

(5993=Premium 6X4 with a different pin-out, excellent construction, long-life tube)