select distinct substring(name,1,1) from stamps ,np_master where year(stamps.issue_date)=1973 and month(issue_date)=5 and np_master.np_code=stamps.np_code and np_master.np='P' and stamps.serial_no='0685' order by substring(name,1,1)
StampsIndia
Issue Date >> year >> 1973 >> month >> May >> Currency >> P >> Serial Number >> 0685 >> Alpha >> T >>