4 pin (UX-4) Amphenol brown micanol chassis socket with "metal wavy washer" NOS 1950's nickel plated contacts (0 in stock)
4 pin ceramic chassis mount sockets for 2A3, 300B, 45, 50, 811A (UX-4 base) (0 in stock)
4 pin ceramic chassis mount sockets with gold plated terminals for 2A3, 300B, 45, 50, 811A (UX-4 base) (0 in stock)
4 Pin EF Johnson (123-209-200) NOS for 811A / 572B / 866A (1 in stock)
4 Pin EF Johnson (123-210-200) NOS for 811A / 572B / 866A / 8020W
4-Pin EF Johnson (122-224-1) ceramic wafer socket NOS (UX-4) (6 in stock) (300B, 10Y, 2A3, 45, 50, 26)
4-Pin EF Johnson (122-244-1) ceramic wafer socket NOS (0 in stock)
4-pin EF Johnson 123-206-1 = 123-206-200 Jumbo ceramic bayonet socket for 8008, 5C22, C6J vacuum tubes NOS (0 in stock)
