Five fine United Nations 1971 first-day covers commemorating Refugees (3) , Peaceful Use of the Sea-bed, and the International Postal Union with 0.5 and 0.3 Swiss Francs, 6, 13 and 20 cent stamps.

Postmarked in Geneva (2) and New York (3).

I have United Nations first day covers from 1954, 1955, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1965, 1970, 1971 at 'antarcticbooks.'