(!!) 6SN7GTB Tungsol black plates tall bottle "U" getter used/good 1950's (9.2/8.2ma)
(!!) 6V6GT Philco by Sylvania tests like new 1957 (42.2ma)
(!!) GL-810 GE tests and looks like new 1951 large getter reboxed (115ma)
(!) (slightly microphonic) JAN-CRC-6SL7GT RCA NOS black plates 1951 tilted glass (2.0/2.2ma)
(!) 6F6G=VT-66A Sylvania used/tests like new 1940's (45ma)
(!) 6SL7GT RCA burgundy base NOS 1951 (1.7/1.8ma)
(BEST SINGLE) 6C8G RCA Radiotron NOS 1940's (3.8/3.9ma) 1-3% section balance
(slightly microphonic) 6SN7GT Hytron NOS 1948 (7/8ma)
(slightly microphonic) 6SN7GTA GE NOS 1952 copper grid posts (7.4/10ma)
43 National Union NOS 1950 era (75/58)
43 Sylvania NOS 1947 (71/58)
6B4G Raytheon NOS 1950 era (94ma)
6B4G Raytheon NOS separate plates 1940's (100ma)
6B4G Sylvania rebranded Delco NOS separate plates 1952 (81ma)
6B4G Sylvania rebranded RCA used/good 1953 (77.5ma)
6B4G Zenith by Sylvania NOS plates connected 1940's (123ma)
6BH6 RCA black plate NOS "D" getter halo 1949 (7.8ma)
6BH6 RCA black plate NOS "D" getter halo 1951 (5.1ma)
6BH6 RCA black plate NOS "D" getter halo 1961 (6.3ma)
6C8G CBS NOS 1950's (like RCA) (3.7/4.1ma)
