Artifact Details Title Vacuum tube type 12SA7 Catalog Number 102682288 Type Physical object Manufacturer Sylvania Electric Products, Inc. Place Manufactured U.S. Identifying Numbers Model number 12SA7 Dimensions overall: 1 1/2 in x 1 1/2 in x 2 1/2 in Category Component/vacuum tube Credit Gift of Gene M. Amdahl Lot Number X1040.90