The coat of arms of the Region of Murcia is described in the article 4 of the Spanish Organic Law 4 of 9 June 1982, the Statute of Autonomy of the Region of Murcia and further regulated by Decree 34 of 8 June 1983, approving the official design and use of the coat of arms of the Region of Murcia. Shield The first official description of the coat of arms remits to the elements of the flag and is composed as follows: Given the lack of precision to define a correct blazon, was approved a decree on 8 June 1983 blazoned the shield of the region as follows: The four castles evoke the region's history as a frontier zone caught between the Crown of Aragon and the Kingdom of Castile, and the Nasrid Kingdom of Granada and the Mediterranean Sea: four territories of land and sea, Christians and Muslims, adventurers and warriors, all of which created a distinct Murcian culture. The four castles also can refer to the four lordships that initially carved up the area after it was conquered by Alfonso X of Castile. The seven crowns were granted to the Kingdom of Murcia by the Castilian Crown. The first five crowns were granted by Alfonso X on 14 May 1281, when he granted the standard and municipal seal to the capital city of Murcia. The sixth crown was granted by Peter of Castile on 4 May 1361, in honour of the loyalty of Murcia shown to Peter's cause during the War of the Two Peters. The seventh crown was granted by Philip V of Spain on 16 September 1709 in honour of the loyalty of Murcia shown to Philip's cause during the War of the Spanish Succession. Official design The official design is commonly used by the autonomous institutions of Murcia, although it coexists with a simplified design of it (a logo). According to the official blazon, the official design is not designed to conform to traditional heraldic rules. The blazon does not specify that the castles not specify that they are open or they must have voided gates and windows, usually Azure, and their design should include at least two windows. Proportions of the charges in relation to the dimensions of the shield are wrong, according to the blazon, they are inscribed in the dexter canton and the sinister base, so each group of charges should equal