select distinct substring(name,1,1) from stamps ,color_master where color_master.color_code=stamps.color_code and color_master.color='Mineral Red' and stamps.serial_no='0571' and year(stamps.issue_date)=1968 order by substring(name,1,1)
IndianPost
Color >> Mineral Red >> Serial Number >> 0571 >> Issue Date >> year >> 1968 >> Alpha >> B >>