cover from New York City to Quebec, Canada, franked with two 2c Black (73) and pair of 3c Rose (65), all tied by December 20 datestamps, brown all-over advertising on reverse for Idaho and Nevada silver and California and Canada gold, small repairs along left edge and vertical crease through one stamp, exploded for display, very fine appearance, a striking mining advertising cover 

exploded to show all-over advertising design from the Delery Mining Company on reverse of cover to Quebec, Canada, Franked with pair 3c Rose and two 2c Black,