select distinct substring(name,1,1) from stamps ,color_master where color_master.color_code=stamps.color_code and color_master.color='Burnt Sienna' and stamps.serial_no='0845' and year(stamps.issue_date)=1977 order by substring(name,1,1)
IndianPost
Color >> Burnt Sienna >> Serial Number >> 0845 >> Issue Date >> year >> 1977 >> Alpha >> M >>