select issue_date from stamps,paper_master,printsize_master,np_master where stamps.issue_date!=''  and paper_master.paper_code=stamps.paper_code and paper_master.paper='Unwatermarked paper' and printsize_master.printsize_code=stamps.printsize_code and printsize_master.printsize='4.4  x 3.6'  and stamps.serial_no='0885'   and issue_date!='' order by issue_date