Artifact Details Title Vacuum tube type 12AU7 Catalog Number 102735257 Type Physical object Description This record consists of 2 tubes. The 12AU7 is a medium-mu twin triode in a miniature nine-pin glass envelope. They are in plain cardboard boxes; the only marking on which is the tube type stamped in black ink. Manufacturer General Electric Place Manufactured U. S. Identifying Numbers Model number 12AU7 Printed in silver ink around the glass envelope. Dimensions overall: 2 1/4 in x 7/8 in x 7/8 in Category Component/vacuum tube Credit Gift of Gene M. Amdahl Lot Number X1040.90
