(!!!!) (Best Overall Pair) 50 Sylvania and Sylvania branded Zenith ST-16 shape NOS original box 1940's (60ma and 63ma)
50 Philco by Sylvania ST-16 used/tests like new 1943 (10/22/43) is etched on base (61ma)
81 ST-16 Sylvania NOS 1940's top mica tilted, 1 small glass chip inside tube (56/40)
