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(!!!) (BEST PAIR) 7247=12DW7 CBS gray ribbed plates NOS 1960 (0.9/8.8ma and 0.9/8.6ma) 1-3% matched
(!!!) (Best Value Single) 12DW7=7247 Magnovox Mullard UK used/good 1963 (0.9ma/13.6ma)
(!!!) 12DW7=7247 CBS ribbed plates NOS 1960 (0.9ma/11.4ma)
(!!) 7247=12DW7 GE branded RCA tall gray ribbed plates low hours/tests like new 1961 (1.3ma and 9.2ma)
(!!) 7247=12DW7 GE branded Tungsol tall gray ribbed plates NOS 1960's (1.0ma and 10.4ma)
(!!) 7247=12DW7 GE branded Tungsol tall gray ribbed plates used/good 1960 era (1.0ma and 7.8ma)
(!!) 7247=12DW7 GE branded Westinghouse "U" getter used/good early 1960's (0.7ma and 8.6ma)
(!) (Best Single) 7247=12DW7 Amperex Globe Logo by Matsushita Japan NOS 1967 similar sound to Mullard (1.5ma and 11.6ma) (High mA and Gm)
(READ REVIEW) 7247=12DW7 Mullard England rebranded Hammond and Bogen 1965-1970 (1.2/10ma and 1.1/10ma) (1-3% matched)
12DW7 Sylvania rebranded RCA tests like new 1961 era (1.0ma/11.2ma)
7247 GE NOS tall gray ribbed plates 1970's (1.1ma and 9.4ma)
7247=12DW7 GE branded RCA used/good 1960's (0.8/9.3ma)
