(DISPLAY TUBE) 274A Western Electric 1966 open filament - doesn't work (display tube only)
(DISPLAY TUBE) 4242A=242A=CV25 STC England broken filament - display tube only
(DISPLAY) 242 Duovac USA brass base 1930's used but has high current will not run stable in amp - sold as display tube only
PZ=47 Arcturus Blue NOS low emission (display tube)
UX-120 Radiotron used/tests 35% (low Gm=100) (display tube)
