In 1997, United Nations General Assembly proclaimed year 2001 to be the International Year of Volunteers. Showing below is a beautiful slogan postmark to mark the International Year of Volunteers. The postmark was produced by the postal authority of United Nations New York. The stamp is one of the two (34c and 80c) stamps to commemorate the International Year of Volunteers issued by United Nations New York on 29 March 2001. Date of postmark: 20 July 2001.