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(!!) (#1 37 Pair) 37 RCA like new 1940's (7.7ma and 7.8ma) 1% matched
(!!) (#1 37 Pair) 37 RCA NOS 1940's (7.3ma and 7.5ma)
(!!) (#1 37 Pair) 37 RCA NOS 1940's (8.5ma and 8.5ma) 1% matched
(!!) (Pair) 37 Sylvania 1940 era used/good no printing (6.6ma and 6.5ma) (Same Gm) 1-2% matched
(!) (Best Single) 37 GE ribbed plate NOS 1943 (8.0ma)
(!) (Pair) 37 Philco engraved base 1930's used/test strong (6.8ma and 7.6ma)
(!) (Single) 37 GE smooth plate NOS 1943 (7.1ma)
(!) (Single) 37 Philco by Sylvania smooth plate tests like new 1940's (8.3ma)
(!) (Single) 37 Silvertone smooth plate used/tests like new 1930's 1 top mica is folded down (7.1ma)
(!) Recommended Pair) 37 RCA branded GE NOS 1946 and RCA like new 1930's (7.3ma and 8.3ma)
37 Raytheon NOS 1946 (7.3ma) (Highest mA)
37 RCA branded Philco used/good 1940's (6.4ma)
37 Sylvania branded Raytheon NOS 1948 (7.0ma)
