select distinct substring(name,1,1) from stamps ,printsize_master where year(stamps.issue_date)=1971 and month(issue_date)=11 and printsize_master.printsize_code=stamps.printsize_code and printsize_master.printsize='3.56 x 2.5' and stamps.serial_no='0644' order by substring(name,1,1)
IndianPost
Issue Date >> year >> 1971 >> month >> November >> Print Size >> 3.56 x 2.5 >> Serial Number >> 0644 >> Alpha >> A >>