(!!!) (PAIR) 6SL7GT Sylvania round gray plates NOS 1952 (2.1/2.4ma and 2.3/2.5ma) (same Gm)

1 low noise pair) 6SL7GT Sylvania round gray plates NOS 1952 in white boxes

1 tube) 2.1/2.4ma Gm=1500/1600

1 tube) 2.3/2.5ma Gm=1500/1600

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