This collectible United Nations First Day Cover (FDC) from 1985 commemorates the Flag Series, specifically featuring the flag of the Federal Republic of Germany. The cover originates from the United Nations Postal Administration in New York, NY, and is postmarked on the first day of issue, September 20, 1985.

The cover bears a crisp "UNITED NATIONS, NY" circular date stamp (CDS) with "FLAG SERIES" and "FIRST DAY OF ISSUE" clearly visible, marking its significance as a philatelic item. The postage is represented by a 22c United Nations stamp, Scott #493, depicting the German flag. The reverse of the cover provides details about the design, stating it is an "ÉDITION DES NATIONS UNIES, GENÈVE" and features a "DESSIN DE KYUNG-SOOK KWAK" from "L'ÉCOLE D'ART ALSTERDAMM, HAMBOURG (RÉPUBLIQUE FÉDÉRALE D'ALLEMAGNE)". This FDC represents a unique piece of postal history and international philately, showcasing the United Nations' role in global communication and cultural representation.

This first day cover is a prime example of thematic philately, appealing to collectors interested in the United Nations, flag designs, or German postal history. The detailed markings and official issuance make it a valuable addition to any collection of FDCs or international stamps.