Details
7 pin "medium" ceramic National brand socket with mounting flange and 0.855" pin circle diameter. A rare find of Original National brand sockets. Fits 1 1/4" chassis hole with 1 7/8" mounting centers. Fits 6A6, 59, 1625, etc. Do not confuse these with the 7 pin "small" sockets with the 0.75" pin circle diameter.