(!!!) (Best Overall UV-99) C-299=UV-99 Cunningham NOS 1920's with tube data sheet (3.4ma) (highest Ma) (UV have small pins)
(!!!) (Recommended Single) C-299=UV-99 Cunningham NOS 1920's (2.3ma) (highest Ma) (UV have small pins) (strong Gm)
(!!!) (Recommended Single) C-299=UV-99 Cunningham NOS 1920's with tube data sheet (2.4ma) (highest Ma) (UV have small pins) (strong Gm)
(!!!) (Recommended Single) C-299=UV-99 Cunningham NOS 1920's with tube data sheet (2.6ma) (highest Ma) (UV have small pins) (strong Gm)
(display tube) UV-99 Radiotron brass base 1920's - lights up but does not have emission
(display tube) UV-99 Radiotron brass base 1920's tarnished base - lights up
(display tube) UV-99 Unknown maker - does not work
99=X-199 Silvertone NOS 1934 (2.5ma, Gm=500) (strong single)
99=X-99 RCA Radiotron NOS 1930's in sealed box (2.2ma)
CX-299=99 Cunningham NOS 1930 era (2.1ma)
SHORT 12.3.19 (!!) (#1 UV-99) 99 Super Silvertone NOS original box with sticker on glass (17/11)
UX-199=199 RCA Radiotron NOS 1930 era (1.7ma)
