Convention for the Suppression of the Circulation of and Traffic in Obscene Publications
The treaty was concluded on 12 September 1923 as the International Convention for the Suppression of the Circulation of and Traffic in Obscene Publications and entered into force on 7 August 1924 . 
<triplet> Convention for the Suppression of the Circulation of and Traffic in Obscene Publications <subj> 12 September 1923 <obj> point in time