select distinct substring(name,1,1) from stamps ,color_master where year(stamps.issue_date)=1935 and color_master.color_code=stamps.color_code and color_master.color='Olive green and Grey' and stamps.serial_no='0240' order by substring(name,1,1)
IndianPost
Issue Date >> year >> 1935 >> Color >> Olive green and Grey >> Serial Number >> 0240 >> Alpha >> S >>