For auction is 1st Day Cover from the United Nations. The stamp is the 3-cent "Security Council" issue (catalog #55). It is postmarked at United Nations, New York on the issue date, October 24, 1957.
The envelope measures appx 6 1/2 x 3 1/2 inches and is in excellent condition. It has no rips, tears, writing, spills or smears; all markings are associated with the issuance and processing of the stamp.
A nice collectible item for the UN 1st Day Cover collector.