cornercard on cover from New York City to London, England, franked with pair of 2c Black (73) and pair of 10c Green (68), all tied cork cancels, pink all-over advertising on reverse for Idaho and Nevada silver and California and Canada gold, small repairs throughout, exploded for display, very fine appearance, a striking mining advertising cover 

exploded to show all-over design on reverse from the DeLery Gold Mining Company, franked with pair 2c Black and pair 10c Green, addressed to London, England