Coat of arms of Haarlem
The coat of arms of Haarlem is the official symbol of the city of Haarlem. The sword and stars can be found as public decorations throughout the city.

Heraldic elements

Escutcheon 

The coat of arms of Haarlem consists of a red shield with a silver sword with golden handle under a white Jerusalem cross and flanked by 4 white six-pointed stars. Above the shield is the Imperial Crown of Austria under barren branches holding two Damiate bells, all held up by two golden lions standing on the motto of Haarlem. Several heraldic elements have their basis in the history of Haarlem.
The motto of Haarlem is Vicit vim virtus (Latin for virtue conquered violence). The barren branches refer to the burned trees in the Haarlemmerhout, which were burned again and again during various sieges, most notably during the siege by the army of Jacqueline, Countess of Hainaut in 1428. Haarlem had taken side with the Cods in the Hook and Cod wars, and thus against Jacoba of Bavaria. The bells refer to the damiaatjes. Two bells were given to the city of Haarlem's St. Bavochurch to commemorate the heroic cutting of the harbour chain during the Siege of Damietta (1218) with a "saw ship", a legendary ship equipped with an iron saw fastened along the bow and front keel. This ship sawed through the harbour chain and allowed the fleet to successfully attack the city.

Wapenvermeerdering 

According to local legend, the original shield of Haarlem contained simply the four stars on a red background. As a result of the heroic deeds in Damietta, the Holy Roman Emperor granted Haarlem the usage of a sword and the Patriarch of Jerusalem granted the use of a cross. This story is known as the "Wapenvermeerdering", or "Addition to the Arms". In portrayals of this legend, the emperor is shown with a red beard, since he is supposed to be Emperor Barbarossa.

As Haarlem historians love to point out, Emperor Barbarossa died in 1190 well before the siege of Damietta took place in 1218, so the story shown in the painting is just a Haarlem fantasy of greater knighthood and glory in the Crusades.

During the Hook and Cod wars in the County of Holland in the 15th century, Maximilian I, Holy Roman Emperor supported the bourgeoisie in the cities (Cod) in their fight against the nobility in the countryside (Hook). During these wars Haarlem, like the cities of Dordrecht, Leiden, Amsterdam, and The Hague, loaned large amounts of money to Maximilian I. The emperor granted Haarlem and the other cities the right to use his personal imperial crown in their coat of arms, out of gratitude for these loans. In the coat of arms of Haarlem, the Imperial Crown is positioned on top of the escutcheon.

References 

 Deugd boven geweld, Een geschiedenis van Haarlem, 1245-1995, edited by Gineke van der Ree-Scholtens, 1995, 

Culture in Haarlem
History of Haarlem
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Coats of arms with lions