Signed on September 8, 1951

The term "Signed on September 8, 1951" refers to the date when an agreement or treaty was officially ratified by the involved parties. It indicates that the document detailing the terms was formally signed on that day, marking the beginning of its legal or official effect. This date is significant because it establishes when the agreement was finalized and can often serve as a reference point for the implementation or enforcement of its provisions.