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(!!!!) (Best Value Single) 10 GE Radiotron used/good 1940's (27ma)
(!!!!) (Single) 10 Sylvania "engraved base" 1930's NOS (29ma)
(!!!) (PAIR) VT-25-A Sylvania NOS and like new 1940's (34ma and 38.2ma) (not the same as VT-25)
(!!) (Best Pair) 10=VT-25 Sylvania and Sylvania branded Tungsol NOS 1940's (26.5ma and 29ma)
(READ REVIEW) JAN-CHS-10Y=VT-25 SYLVANIA NOS 1940's same construction (27ma and 29ma)
10=VT-25 GE NOS 1940's (24ma)