(!!!) (Best RCA Single) 30 RCA Victor NOS 1940's original box (3.3ma)
(!!!) (Best Single) 76 Sylvania Philco engraved base NOS 1930's (6.2ma)
(!!!) (Best Value Single) 45 Tungsol tests like new 1940's (40ma)
(!!!) (MATCHED QUAD) JAN-CW-231D Western Electric NOS 1953 (1.6/1.6/1.6/1.5ma) 1-2% matched
(!!!) (Recomended Balloon 50) CX-350 Cunningham Balloon used/good 1930 era - very good condition (44.2ma) (rare 50)
(!!!) (Recommended PAIR 1953) JAN-CW-231D Western Electric NOS 1953 (1.5ma and 1.5ma)
(!!!) (Recommended PAIR 1953) JAN-CW-231D Western Electric NOS 1953 (1.8ma and 1.8ma)
(!!!) (Recommended Pair) 10=VT-25 SYLVANIA NOS 1940's large getter flashing (27.0ma and 28.2ma) (Same Gm)
(!!!) (Recommended Pair) 30 RCA Cunningham engraved base 1930's low hours/test like new (3.3ma and 3.4ma)
(!!!) (Recommended Pair) 56 National Union rebranded Western Electronics NOS 1940's (4.9ma and 5.1ma)
(!!!) (Recommended Pair) 76 Sylvania NOS - 1 tube branded National Union 1947 era same build (5.3ma and 5.6ma)
(!!!) (Recommended Single) ER-230=30 Raytheon 1930's used/like new (4.1ma and Gm=800)
(!!!) (Single) 6J5G Sylvania engraved base black oval plate used/very good 1930's (8.0ma)
(!!!) 231=31 US Made Balloon NOS 1920's (14.2ma)
(!!!) 31 RCA Radiotron Balloon NOS 1920's (13.2ma)
(!!!) 76 Crosley by Ken Rad engraved base like new 1930's (5.7ma)
(!!!) 76 RCA branded Raytheon NOS 1954 (5.1ma)
(!!) (#1 37 Pair) 37 RCA like new 1940's (7.7ma and 7.8ma) 1% matched
(!!) (#1 37 Pair) 37 RCA NOS 1940's (7.3ma and 7.5ma)
(!!) (#1 37 Pair) 37 RCA NOS 1940's (8.5ma and 8.5ma) 1% matched
