Issued by the United Nations Postal Administration in 1967, this 6-cent commemorative stamp reproduces part of Marc Chagall’s magnificent stained-glass “Peace Window” at the UN headquarters in New York. The artwork, bathed in deep blues and radiant light, symbolizes humanity’s striving for harmony and spiritual unity. Figures and celestial motifs swirl in Chagall’s dreamlike style, celebrating peace after the tragedies of war. A favorite among art-on-stamps collectors, it exemplifies how philately preserves world culture through miniature masterpieces.