Artifact Details Title Pulse Amplifier 4604 D System Building Block Catalog Number 102688233 Type Physical object Description Next to serial number is a green sticker that reads "QC APPROVED BY <illegible signature> DATE 8-22-63 DIGITAL EQUIPMENT CORPORATION". On other side panel is a red Dyno label that reads "MODEL 4604 8/17/63". Date 1965 ca. Manufacturer Digital Equipment Corporation (DEC) Identifying Numbers Model number 4604 D Other number 4604 8/17/63 On red Dyno label Other number 8-22-63 On green sticker Part number 4604 Serial number 0126256 Dimensions overall: 1/2 in x 7 in x 4 1/2 in Category Component/module