(!!) (Best Overall Single) 7247=12DW7 GE NOS 1970 (1.3ma and 13.6ma) (Highest Ma and Gm)
(!!) 7247=12DW7 GE branded Westinghouse "U" getter used/good early 1960's (0.7ma and 8.6ma)
(!!) (BEST PAIR) 7247=12DW7 GE tall gray ribbed plates rebranded RCA NOS 1965-1966 (1.0ma and 10.2ma and 1.0/10.0ma) 1-2% matched
(!!) 7247=12DW7 GE branded Tungsol tall gray ribbed plates NOS 1960's (1.0ma and 10.4ma)
12DW7 Sylvania NOS 1970's (1.2/9.0ma)
(!!!) (BEST SINGLE) 7247 IECO Mullard like new 1962 (1.2ma/9.4ma)
7247 GE NOS tall gray ribbed plates 1970's (1.1ma and 9.4ma)
12DW7 Sylvania NOS 1960's (1.4/8.7ma)
(!!) (Best Overall Single) 7247=12DW7 GE branded RCA NOS pinched plates 1970 (1.2ma and 14.5ma) (Highest Ma and Gm)
(!!) (Best Single) 7247 Fisher Telefunken Germany <> bottom "SMOOTH PLATES" like new 1960's (1.2ma and 8.6ma)
7247=12DW7 GE branded RCA used/good 1960's (0.8/9.3ma)
7247=12DW7 EICO MULLARD UK used/good 1962 (0.7/9.2ma)
