(!!!!) (Best Pair #2) E810F=7788 Amperex PQ USA NOS gold pins 1974-1976 (53ma and 53.5ma)

1 pair) E810F=7788 Amperex PQ USA NOS gold pins 1974-1976 in white boxes 1 tube) 53.0ma Gm=52,500 1 tube) 53.5ma Gm=56,500 Good Ma range 35-45ma Good Gm = 35,000 - 45,000 (Frame-Grid 10,000-hour low-noise Pentode, Filament=6.3V @ 340ma) - Allnic H-3000 phono - Allnic L-1500 linestage - Allnic L-3000