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Artifact Details

Title

Vacuum tube type 201A

Catalog Number

102691724

Type

Physical object

Description

This tube is not cylindrical in shape. It is narrow at the bottom and is wider at the top. The glass is silver except for a clear line at the bottom. There are four pins on the base. Printed on the base is "DURO". Handwritten text on sticker on glass reads "NG". There are corrosion spots on the glass with a large spot on the side opposite the text.

Manufacturer

Duro

Identifying Numbers

Other number

201-A

Printed on base

Dimensions

overall: 4 5/8 in x 1 5/8 in x 1 5/8 in