select distinct substring(name,1,1) from stamps ,paper_master where year(stamps.issue_date)=1973 and month(issue_date)=5 and paper_master.paper_code=stamps.paper_code and paper_master.paper='Unwatermarked adhesive coated paper' and stamps.serial_no='0681' order by substring(name,1,1)
IndianPost
Issue Date >> year >> 1973 >> month >> May >> Paper >> Unwatermarked adhesive coated paper >> Serial Number >> 0681 >> Alpha >> R >>