select distinct substring(name,1,1) from stamps ,color_master where color_master.color_code=stamps.color_code and color_master.color='Yellow Green and Blue Black' and stamps.serial_no='0854' and year(stamps.issue_date)=1977 order by substring(name,1,1)
IndianPost
Color >> Yellow Green and Blue Black >> Serial Number >> 0854 >> Issue Date >> year >> 1977 >> Alpha >> B >>