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(!!) (Best Single) 13EM7 RCA coin-base black plates NOS 1970's (2.7/47.2ma)
6DE7 RCA NOS 1960's (3.2/36ma)
(!!!) (Recommended Single) 6KG6A RCA JAPAN NOS original boxes 1970's (142ma)
2X2A RCA NOS 1960's (59/40)
7868 Wurlitzer RCA black plate tipped top NOS 1962 (48.5ma)
(!!!) (#2 19J6 Pair) 9J6 RCA NOS 1950's - 1960's same internal plate structure, different getter halo shape
81 ST-19 Harvey Burnam by RCA NOS engraved base 1940's (54/40)
6012 RCA NOS 1958 (1 in stock)
(!!) (Best Quad) 6CL6 RCA FAA NOS 1963 (35.5, 35.6, 36.2, 37.6ma)
6BG6G RCA NOS 1950's (66ma)
6R7GT RCA NOS 1940's (2 in stock)
(!!) 26 RCA Radiotron balloon used/good 1920's (6.2mA Gm=900)
(!!!!) (Best Pair #2) 01A RCA Cunningham engraved base NOS 1930's (3.3ma and 3.2ma) (same Gm)
6HV5A GE branded RCA NOS (101/60)
(!) (#1 81 ST-19 glass shape) 81 ST-19 Purotron made by RCA "engraved base" NOS in Sparton box 1940's (56/40) (strong output)
(PAIR) 12BD6 RCA NOS (85-90/60)
(!!!) (PAIR) 5998A Sylvania JAN NOS 1980 (118/131ma and 121/130ma) (5998A=7236) 1-3% matched
(!!) (Pair) 12X4 RCA black plates NOS 1970 (44-47/40 and 44-47/40)
6JE6A RCA Setchell Carlson used/good 1965 (87mA)
3C23 Marshall 1965 probably by RCA in Marshall box
