Title
Vacuum tube type 3D21BCatalog Number
102731478Type
Physical objectDescription
The record contains 24 vacuum tubes, type 3D21B, each with an eight pin connector.Manufacturer
CBSPlace Manufactured
U.S.Identifying Numbers
| Model number | 3D21B | Printed in the middle of the glass in silver |
| Other number | 58-26 | Printed in red at the base of the tube |
Dimensions
overall: 4 1/2 in x 2 3/4 in x 2 3/4 inCategory
Component/vacuum tube