|Date of adoption||June 28, 1962|
|Date in force||April 25, 1964|
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It was established in 1962, with the preamble stating:
Having decided upon the adoption of certain proposals with regard to equality of treatment of nationals and non-nationals in social security,...
As of 2013, the treaty has been ratified by 38 states. One of these ratifying states—the Netherlands (for the Kingdom in Europe only)—has denounced the treaty.