select distinct substring(name,1,1) from stamps ,printsize_master where year(stamps.issue_date)=1971 and month(issue_date)=8 and stamps.serial_no='0640' and printsize_master.printsize_code=stamps.printsize_code and printsize_master.printsize='3.80 X 2.0' order by substring(name,1,1)
IndianPost
Issue Date >> year >> 1971 >> month >> August >> Serial Number >> 0640 >> Print Size >> 3.80 X 2.0 >> Alpha >> A >>