select distinct substring(name,1,1) from stamps ,paper_master,np_master where np_master.np_code=stamps.np_code and np_master.np='P' and paper_master.paper_code=stamps.paper_code and paper_master.paper='All over five pointed multiple star' and stamps.serial_no='0391' and year(stamps.issue_date)=1957 order by substring(name,1,1)
IndianPost
Currency >> P >> Paper >> All over five pointed multiple star >> Serial Number >> 0391 >> Issue Date >> year >> 1957 >> Alpha >> R >>