THE FLAG OF SEVILLE
The "NO 8 DO" is a heraldic pun. The 8-like figure represents a wool hank, in Spanish "madeja". So the emblem should be read "NO-madeja-DO" which sounds similar to "no me ha dejado" ie. "she did not abandon me", making reference to Seville's support to King Alphonse X during his son Don Sancho's uprising.
Santiago Dotor, 28 October 1998