The coat of arms designed by de Garay is Argent (white) shield with a sable (black) essorant (rousant) eagle facing left[a].

This coat of arms depicts a dove above the water with an anchor sticking out of it, and over time two sailing ships also appeared on it.

Since it was a personal decision of the mayor that was never sanctioned, these flags and the modified coat of arms themselves did not become official symbols and were only used during the visit of the King of Spain in 1978.

[1] The first article states that the official city flag features a white field with the shield designed in 1580 by Juan de Garay in its center.

The origins of the flag date back to an urban legend according to which in the second half of the 19th century, a district inhabited by Italian immigrants declared independence.