select distinct substring(name,1,1) from stamps ,np_master where year(stamps.issue_date)=1950 and stamps.serial_no='0331' and np_master.np_code=stamps.np_code and np_master.np='A' order by substring(name,1,1)
IndianPost
Issue Date >> year >> 1950 >> Serial Number >> 0331 >> Currency >> A >> Alpha >> E >>