(!!!) (Best Single) 45 Sylvania like new 1940's (38.2ma)
(!!!) (Good Value Pair) 45 RCA Radiotron ST-14 used/good 1940's identical construction (23ma and 26.2ma)
(!!) 45 RCA NOS ST-14 1955 (29ma)
(!!) 45 RCA NOS ST-14 1955 slightly tilted glass (35ma)
(!!) 45 RCA Victor NOS in RCA box 1948 (39ma)
(!) (BEST SINGLE) 45 Sylvania branded RCA NOS 1952 getter stain top of glass (33ma)
245=45 Silvertone engraved base 1934 used/tests like new (32ma Gm=2000)
45 National Union ST-14 NOS printed base 1940's (25ma)
CX-345 Cunningham Balloon used/52-55% Ma and Gm 1930 era good condition (19ma)
UX-245 RCA Balloon (display tube)
