"U. N. Stamp" by Andy Warhol is a vibrant offset lithograph printed in colors on Rives paper, incorporating an actual United Nations stamp as an integrated element of the composition. True to Warhol's fascination with mass-produced imagery and consumer culture, the work elevates an everyday object — the postage stamp — into the realm of fine art. The full margins of the Rives paper lend the piece a refined, collectible quality, bridging the gap between official bureaucratic iconography and Warhol's signature Pop Art aesthetic.