Artifact Details

Title

Vacuum tube type EF86

Catalog Number

102654819

Type

Physical object

Manufacturer

Mullard, Ltd.

Identifying Numbers

Model number EF 86 Stamped on front of tube in black ink
Other number 1BOA Stamped on base in silver ink
Other number BVA Stamped on front of tube in black ink

Dimensions

overall: 3 7/8 in x 1 1/4 in x 1 1/4 in

Description

Vintage vacuum tube like those from the Colossus Computer rebuild project. Vacuum tube is covered in matte, red paint. The paint has chipped in approximately five places. Stamped on the front of the tube is "Mullard" and "Penetone Trade Mark."

Category

Component/vacuum tube

Credit

Gift of Bletchley Park Trust

Lot Number

X5630.2010