This official 1974 First Day Cover features the 10¢ Rhodochrosite stamp from the Our Mineral Heritage series, postmarked in Lincoln, Nebraska on June 13, 1974. The Art Craft cachet was produced for the American Federation of Mineralogical Societies Inc. and illustrates four classic American minerals: tourmaline, rhodochrosite, petrified wood, and amethyst.
The stamp honors the nation’s rich mineralogical legacy at a time when earth-science education and hobby collecting were surging in popularity. The Federation’s sponsorship underscores the cover’s status as the officially recognized philatelic tribute to America’s mineral heritage.
A notable detail is the diamond-shaped stamp design that mirrors the crystal structure of rhodochrosite itself, a clever marriage of subject and geometry rarely seen on U.S. issues. The cover is addressed to a collector in San Francisco’s Cathedral Hill neighborhood, an area long associated with mid-century apartment living and active stamp clubs.
A clean, well-centered example that makes an attractive addition to any mineral, science, or Art Craft topical collection.
