select distinct substring(name,1,1) from stamps ,color_master where color_master.color_code=stamps.color_code and color_master.color='Olive Green and Carmine' and year(stamps.issue_date)=1973 and stamps.serial_no='0688' order by substring(name,1,1)
IndianPost
Color >> Olive Green and Carmine >> Issue Date >> year >> 1973 >> Serial Number >> 0688 >> Alpha >> M >>