Buffer And/Or Gate printed circuit card
This is a double sided PCB with several QA stamps and a 52-pin edge connector. There is a copyright symbol saying SDS-65.
Scientific Data Systems (SDS)
||Stamped on component side adjacent to connector
||Stamped on circuit side opposite connector.
||ASSY NO 116056
||Stamped on component side opposite connector.
overall: 3/8 in x 4 1/4 in x 4 7/8 in
SAP Collection, Computer History Museum