IBM Disk Storage Products memento disk platter
Object 8.5" disk platter titled "Disk Storage Products" with the model numbers of key IBM disk drives between 1955 and 1985 arranged in a timeline.
International Business Machines Corporation (IBM)
||Scratched into silver area on interior edge of disk
overall: 1/4 in x 8 1/2 in x 8 1/2 in
Gift of David R. Johnson