Flag of Buenos Aires Province.
Matías Hiribarne, Facundo Bailo, Ignacio Rossi, Esteban Carrasco and Fernando Barroso<sup id="cite_ref-2" class="reference"><a href="#cite_note-2">[2]</a></sup><br> (Vector graphics image by  <a href="//commons.wikimedia.org/wiki/User_talk:Starchild~commonswiki" title="User talk:Starchild~commonswiki">Starchild</a>)
CC BY 4.0
SVG from <a rel="nofollow" class="external text" href="https://www.argentina.gob.ar/buenosaires/simbolos">here</a><br>based on <a rel="nofollow" class="external text" href="http://www.gba.gov.ar/images/heraldica/banderagrande.jpg">this file</a>