Cruz de Borgoña
The Royal Order of 30 July 1845 determined the maritime password for the population. This was defined as a white flag with an upper red die next to the pod. The die should be square and the length of its side should equal half of the pod. Previously, at least since 1511, the banner that the " Bilbao Consulate " was wearing was white with a red Cross of Burgundy. The relationship of the town with the mercantile and marine activities was always very strong coming to share headquarters. In 1603 the new consistorial house is inaugurated and in it the headquarters of the city council and of the referred one " Bilbao Consulate " are located. The intimate relationship made the flag of the Consulate was related as a flag of the town by citizenship.