(!) (Best Single) UX-112A RCA Balloon engraved base like new 1930 era (9.6ma)

UX-112A RCA Balloon engraved base like new 1930 era in white box

9.6ma

Gm=1700

Vplate = 180V

Vgrid = -13.5V

Good used Ma = 5.5 – 7ma

Good used Gm = 1400-1600

stamped circular plate structure similar to RCA / Cunningham UX-112A and CX-112A

– RCA Radiola 16 from 1928