select distinct substring(name,1,1) from stamps ,color_master where year(stamps.issue_date)=1950 and stamps.serial_no='0331' and color_master.color_code=stamps.color_code and color_master.color='Multicolour' order by substring(name,1,1)
IndianPost
Issue Date >> year >> 1950 >> Serial Number >> 0331 >> Color >> Multicolour >> Alpha >> E >>