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(!!!!) (READ REVIEW) GB-5931 Sylvania brown base gold brand 1960's (60/40 and 65/40)
(!!!!) (Recommended Pair) 30 Sylvania NOS 1940's (3.0ma and 3.1ma)
(!!!!) (Recommended Pair) 6BQ5 Sylvania black plate NOS 1970 era (63ma and 68ma)
(!!!!) (Recommended Pair) 7N7 Sylvania branded GE chrome top NOS 1954-1956 (7.4/7.0ma and 7.4/7.2ma) 1-2% matched
(!!!!) (Recommended Pair) 811A RCA branded GE NOS and RCA used/very good 1956-1957 same build (55/36 and 56/36)
(!!!!) (Recommended Pair) JAN-CRC-30 RCA NOS 1940's same build (2.9ma and 3.0ma)
(!!!!) (Recommended Single) 6350 GE NOS 1960's (11.2/13.2ma)
(!!!!) (Single) 10 Sylvania "engraved base" 1930's NOS (29ma)
(!!!!) (Single) 12BH7A GE gray oval plates 1962 (6.6/9.6ma)
(!!!!) (Single) 12BH7A Sylvania gray oval plates "O" getter NOS 1960 era (10.4/7.6ma)
(!!!!) (Single) 5751 GE 5-Star black plates triple mica "U" getter 1957 used/good (1.9/1.8ma)
(!!!!) (Single) 6DJ8=ECC88 Sylvania JAN NOS 1975 (19/24.5ma)
(!!!!) (Single) 6V6GT Sylvania coated glass NOS 1956 (34.2ma)
(!!!!) (Single) ECC189=6ES8 Amperex Holland NOS 1972 (10.5/13.5ma)
(!!!!) (Single) JAN-6189W=12AU7 Philips by Sylvania NOS 1987 (8.2/8.8ma)
(!!!!) (Single) JAN-CHS-6SN7W Sylvania "SHORT BOTTLE" used/70-75% (6/5ma)
(!!!!) (Slightlly microphonic single) JAN-CHS-12AU7 Sylvania "black plates" with "D" getter halo NOS 1951 (9.2/9.8ma)
(!!!!) (Slightlly microphonic single) JAN-CHS-12AU7 Sylvania "black plates" with "D" getter halo NOS 1951 (9.8/10ma)
(!!!!) 56 Arcturus Blue Balloon engraved base tests like new 1930's (5.0ma)
(!!!) (#1 56 National Union Pair) 56 National Union rebranded Western Electronics NOS 1940's (5.0ma and 5.2ma)
