Title
Vacuum tube type 7AK7Catalog Number
102735191Type
Physical objectDescription
This is a pentode vacuum tube with a loctal base. Pin 5 is missing by design. This is a spare tube for Bus Driver-Arithmetic Rack S/N 4.Date
1938 ca.Identifying Numbers
Model number | 7AK7 | Printed in brown ink on top of the glass envelope. |