This record contains two tubes. Type 5881 is beam power vacuum tube in a glass envelope with an octal base. Pin 6 is missing by design. This is a spare tube for Bus driver arithmetic rack, S/N 10.
Manufacturer
Tung-Sol Lamp Works
Place Manufactured
U. S.
Identifying Numbers
Model number
5881
Printed in silver ink on top of the glass envelope.
Other number
322347-3
Printed in white ink around the phenolic base.
Other number
OMD3 V14-3
Printed vertically in white ink on the glass envelope of one of the tubes.
