PZ=47 Arcturus Blue NOS low emission (display tube)

1 display tube) PZ=47 Arcturus Blue Balloon NOS 1930's - tube works but has low emission in white box

tube and getter in excellent condition

Vplate=250V

Vscreen=250V

Vgrid=-15V

Iplate=8.6ma (low)

Gm=500 (low)