{"product_id":"1974-mineral-heritage-10-lincoln-ne-first-day-cover","title":"1974 Mineral Heritage 10¢ Lincoln, NE First Day Cover","description":"\u003cp\u003eThis First Day Cover features the 1974 U.S. Mineral Heritage issue: a se-tenant block of four 10-cent stamps depicting petrified wood, amethyst, tourmaline, and rhodochrosite. It is postmarked Lincoln, Nebraska on June 13, 1974, with the official first-day cancel.\u003c\/p\u003e\u003cp\u003eThe Mineral Heritage series highlighted key American mineral resources that shaped industry, science, and natural history during the 1970s environmental and geological awareness era.\u003c\/p\u003e\u003cp\u003eThe left-side cachet shows a stylized globe surrounded by envelopes beneath the words “FIRST DAY COVER,” a classic design element from the era’s cachet makers.\u003c\/p\u003e\u003cp\u003eThis cover is in excellent condition with sharp postmarks and bright, well-centered stamps, making it an attractive addition for collectors of minerals, geology, or U.S. commemorative First Day Covers.\u003c\/p\u003e","brand":"Maple Springs","offers":[{"title":"Default Title","offer_id":51394926903460,"sku":null,"price":3.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0580\/4713\/5908\/files\/20260702110445.jpg?v=1783043224","url":"https:\/\/fdc-vault.com\/products\/1974-mineral-heritage-10-lincoln-ne-first-day-cover","provider":"Maple Springs - FDC Vault","version":"1.0","type":"link"}