Scott 1540 mint 10c - Amethyst, 1974 Mineral Heritage Commemorative Stamps. representative stamp imaged.
Scott 1540 mint 10c - Amethyst, 1974 Mineral Heritage Commemorative Stamps. representative stamp imaged.
Scott 1540 mint 10c - Amethyst, 1974 Mineral Heritage Commemorative Stamps. representative stamp imaged.