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(!!!!) (Best Pair #1) 01A Cunningham NOS 1940 era boxes were factory sealed (4.0ma and 3.9ma) (same Gm)
(!!!!) (Best Pair #2) 01A Cunningham NOS 1940 era boxes were factory sealed (3.3ma and 3.2ma) (close Gm)
(!!!!) (Best Pair #2) 01A Cunningham NOS 1940 era boxes were factory sealed (3.7ma and 3.6ma) (Same Gm)
(!!!!) (Best Pair) 201A Silvertone Balloon NOS and like new 1930 era (4.2ma and 5.0ma) (Highest mA and Gm)
(!!!!) (Best Pair) CX-301-A Cunningham used/good 1928-1930 era (2.6ma and 2.5ma) (same Gm)
(!!!!) (Best Pair) CX-301A Cunningham and UX-201A RCA Balloon NOS 1930 era (3.1ma and 3.5ma)
(!!!!) (BEST SINGLE) 201-A Silvertone Balloon NOS 1930 era (3.8ma and Gm=750)
(!!!!) (BEST SINGLE) UX-201-A RCA Radiotron Balloon NOS 1930 era (3.9ma and Gm=700)
(!!!!) (Good Value Pair) CX-301-A Cunningham used/good 1930 era (2.0ma and 2.0ma)
(!!!) (Best Single) 201A=UV-201-A Supertron Hoboken New Jersey NOS 1926 (6.4ma)
(!!!) (BEST VALUE PAIR) 01A Sylvania engraved base used/good 1930's (2.4ma and 2.7ma) (same Gm)
(!!!) (Pair) CX-301A Cunningham Balloon used/good 1930-1935 (2.2ma and 2.5ma)
(!!!) (PAIR) UX-201-A Radiotron Balloon used/good brass pins 1930's (2.3ma and Gm=700 x 2 tubes)
(!!!) 201A Silvertone Balloon NOS 1930 era (1.8ma and Gm=500)
(!!!) CX-301-A Cunningham NOS 1930 era (2.6ma Gm=800)
(!!) UX-201-A Radiotron Balloon used/good brass pins 1930's (2.6ma and Gm=700)
(!) (Best Single) UV-201-A Radiotron tests like new 1920's some scrapes on base (3.8ma)
(!) 201A Aristocrat NOS 1930's (2.7ma and Gm=900)
(!) UV-201-A RCA used/good 1930 era - no printing or etching on base (2.3ma)
(Display tube) UV-201 Volutron brass base - does not work - in good condition - 1920's
