select distinct substring(name,1,1) from stamps where year(stamps.issue_date)=1975 and month(issue_date)=10 and dayofmonth(stamps.issue_date)=20 and stamps.serial_no='0780' order by substring(name,1,1)
StampsIndia
Issue Date >> year >> 1975 >> month >> October >> day >> 20 >> Serial Number >> 0780 >> Alpha >> O >>