Greece deposited its ratification of the 1953 Protocol for Limiting and Regulating the Cultivation of the Poppy Plant on 6 February 1963. As one of the three required producing countries to ratify, alongside India and Iran, its act brought the Protocol into force on 8 March 1963.[1]
Listed for context. No score change is recorded for Greece here.
References
Checked. The date and the event were compared with a source that was read.