GJ5M Germanium Diodeb by AEI. Package: silver plated double ended stud package, 3ba and 2ba thread ( see photo) comes complete with original silver plated nuts. Download AEI GJ5M diode datasheet: Status: NOS (New Old Stock) predates 1967 when AEI was absorbed by GEC and "ceased to be" as a brand Individually tested components: YES RoHS compliant: no