M) 1887, MEXICO, POSTAL STATIONARY,EXPRESS WELLS FARGO, SECOND NUMERAL, VERY UNUSUALLY, IF A VALUE I

M) 1887, MEXICO, POSTAL STATIONARY,EXPRESS WELLS FARGO, SECOND NUMERAL, VERY UNUSUALLY, IF A VALUE IS SHOWN ON THE FRONT OF THE ENVELOPE (HERE $25), A LABEL WAS ATTACHED, ONLY GUAYMAS, CHIHUAHUA, MONTERRAY AND MEXICO CITY ARE KNOWN, CIRCULATED COVER FROM, MEXICO TO USA,