Congo 1978 25th Anniversary of Coronation opt'd on Silver Jubilee 500f perf m/sheet, opt in red, Mi BL 13A unmounted mint
Congo 1978 25th Anniversary of Coronation opt'd on Silver Jubilee 500f perf m/sheet, opt in red, Mi BL 13A unmounted mint
Congo 1978 25th Anniversary of Coronation opt'd on Silver Jubilee 500f perf m/sheet, opt in red, Mi BL 13A unmounted mint