https://www.gov.ie/en/irish-treaty-series/treaty-series/parcel-post-agreement-between-the-union-of-south-africa-and-the-republic-of-ireland-done-at-cape-town-on-13-april-1960-and-dublin-on-9-june-1960/
Parcel Post Agreement between the Union of South Africa and the Republic of Ireland, done at Cape...
the union of south africa