$ 109.99
(!!!!) (Best Pair #1) 01A RCA Cunningham engraved base NOS 1930's (3.5ma and 3.4ma) (same Gm)
$ 109.99
(!!!!) (Best Pair #2) 01A RCA Cunningham engraved base NOS 1930's (3.3ma and 3.2ma) (same Gm)
$ 99.99
$ 99.99
(!!!!) (Best Pair) CX-301A Cunningham and UX-201A RCA Balloon NOS 1930 era (3.1ma and 3.5ma)
$ 119.99
(!!!) (PAIR) UX-201-A Radiotron Balloon used/good brass pins 1930's (2.3ma and Gm=700 x 2 tubes)
$ 69.99

