(!!!) (BEST PAIR 1940's) 6AC7=1852=VT-112 RCA 1942-1944 test like new (13/13.5ma)
(!!!) (Best Pair) JAN-CRC-808 RCA NOS 1945 (52/36 and 52/36)
(!!!) (Recommended Pair 1940's) USN-CRC-6AC7 RCA 1942-1945 used/test like new (11.5/11.6ma)
(!!!) (Recommended Pair) 6AC7=1852=VT-112 RCA used/very good 1944 (9.5/9.5ma)
(!!) (#4 Type 30 PAIR) USN-CRC-30 RCA NOS 1940's "L" bracket (2.4ma and 2.8ma)
(!!) (Recommended Pair) USN-CRC-6AC7=VT-112 RCA 1942-1943 used/very good (9.5/9.6ma) 1-3% matched
(!!) (Recommended Pair) USN-CRC-6AC7=VT-112 RCA 1942-1944 used/very good (9.4/9.6ma) 1-3% matched
0D3 Sylvania NOS 1960's (argon)
0D3 Tungsol NOS 1960 era (argon)
VR-150=VT-139=0D3 Sylvania NOS 1940's (argon)
