(!) 12AU7 Tungsol gray ribbed plates NOS square or "D" getter halo 1954 in white box (8.2/8.6ma)
(!) 12BH7A GE gray oval plates "O" getter halo used/good 1964 (7.2ma/8.5ma)
(!) 247=47 RCA Balloon used/60-65% 1930's (20ma)
(!) 247=47 Tungsol Balloon used/good 1930's (23.2ma)
(!) 6F6G=VT-66A Sylvania used/tests like new 1940's (45ma)
(!) 80 National Union used/strong 1940's (53/40 and 56/40)
(!) 80 Tungsol ST-shape tests like new 1940's (54/40 and 56/40)
(!) 80 Tungsol ST-shape tests like new 1940's (57/40 and 60/40)
(!) 80 Tungsol ST-shape used/good 1946 (52/40 and 54/40)
(!) 8BQ5 Tungsol NOS 1960 era (40ma)
(!) JAN-6384 Tungsol NOS 1972 (72ma)
(!) JTL-12AU7 Tungsol narrow plates "D" getter NOS 1955 bottom mica is tilted (10.4/10.6ma)
(!) NY-247=47 National Union Balloon used/good 1930's (22.6ma) (and strong Gm)
(!) RY-247=47 Federal Supreme Balloon used/good 1930's (24.2ma)
(1 Pair) 31 RCA/Cunningham NOS 1930's - 1940's (12.0ma and 13.2ma) (Same Gm)
(Best Single) 6D8G Sylvania NOS 1947 (101/60)
(BEST SINGLE) 6SF5GT Tungsol NOS 1940's (1.1ma Gm=1500)
(DISPLAY TUBE) TS-281 Tungsol Balloon NOS engraved base 1930's (for display purposes only)
(read review) 12AY7 GE branded RCA gray plates "D" getter NOS 1954 (2.3/2.9ma)
0C3W Tungsol rebranded 0C3 National NOS (2 in stock) (argon)