485 Sparton engraved base used/good 1936 (5.5ma)
485 Sylvania branded Philco NOS 1940's (6.0ma)
485 Sylvania engraved base used/good 1934 (8.3ma)
485 Sylvania NOS 1940's (5.5ma)
485 Sylvania used/good 1930's no printing (7.9ma)
