Attractive FDC issued by the WFUNA (World Federation of United Nations Associations) to promote New and Renewable Sources of Energy, with related stamps and 1981 postmark, signed in black felt tip, "Grace de Monaco.” A caption to the reverse indicates that the lovely color cachet is “From a Pressed-Flower Collage by Her Serene Highness Princess Grace of Monaco.” Her printed initials are in the lower right of the cachet. In very fine condition.
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