select distinct substring(name,1,1) from stamps ,color_master where color_master.color_code=stamps.color_code and color_master.color='Jade Green' and year(stamps.issue_date)=1970 and stamps.serial_no='0613' order by substring(name,1,1)
IndianPost
Color >> Jade Green >> Issue Date >> year >> 1970 >> Serial Number >> 0613 >> Alpha >> S >>