(!!!) (Best Overall Pair) 864=VT-24 Hytron USA NOS 1940”s (3.5ma and 3.6ma)

1 matched pair) VT-24=864 Hytron NOS 1940”s original boxes

1 tube) 3.5mA Gm=500

1 tube) 3.6mA Gm=500

NOS Ma = 3 – 3.5ma

NOS Gm = 500+

(864=low microphonic, rebased and improved WD-11)

– RCA Radiola III-A 1924