Artifact Details Title Vacuum tube type 12AU7 Catalog Number 102728974 Type Physical object Description This miniature tube has 9 connector pins. The glass envelope is marked "12AU7/ K1T/ Westinghouse/ MADE IN U.S.A./ A2R". The tube is stored inside of its original box, which has been cataloged separately. Manufacturer Westinghouse Electric Corporation Place Manufactured U.S. Identifying Numbers Model number 12AU7 Printed in grey on the top side of tube 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 Related Records 102728975 Westinghouse vacuum tube type 12AU7 box