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7H7 Sylvania branded GE used/good 1940's (101/60)
(!) (BEST PAIR) 7B7 Sylvania branded GE NOS 1952 (100/60 and 98/60)
7B7 Philco by Sylvania chrome top used/very good 1940's (98/60)
(!!!!!) (Best Overall Pair) 7N7 Sylvania chrome top NOS 1950's 1-2% matched (8.6/8.6ma and 8.6/8.4ma) (same Gm) (best 6SN7 sub using adapter sockets)
7A4=XXL Sylvania branded JEWEL NOS 1940's in tan box (118/50)
7A4=XXL Sylvania used/tests like new 1949 no printing (86/50)
7F7 Sylvania round black plates used/good 1960's (1.9/1.7ma)
(!) (Best Pair) 7C7 Sylvania chrome tops NOS 1952 (93/60 and 95/60)
