The National Bank of Poland presents a coin struck to commemorate the 100th Anniversary of the 3rd Silesian Uprising. The coin was struck in 14.14 g of 925 silver. The reverse presents an image of two insurgents operating a captured German Maxim heavy machine gun, model 1908. They are wearing civilian clothes, like most insurgents. Above them there is an insurgent eagle, which was painted on most of the banners during the III Silesian Uprising. The Third Silesian Uprising took place on the night of 2 to 3 May 1921 and was a reaction to the news of the planned concession of most of the industrialised part of Upper Silesia to Germany. It was preceded by a general strike in almost all industrial plants. The insurgents' actions were led by Wojciech Korfanty, who proclaimed himself the dictator of the Third Silesian Uprising. According to historians, the climactic battle took place in the area of St. Anne's Mountain. On 5 July 1921, after several days of negotiations, the conflicting parties concluded an armistice. Further, long negotiations on the borders began, and it was not until October 1921 that the League of Nations Council and the Council of Ambassadors decided on the final division of the plebiscite area. Poland received a smaller but more industrialised area. This division was more favourable for Poland than the one proposed before the outbreak of the Third Silesian Uprising. On 15 May 1922, a convention was signed in Geneva, which regulated economic matters and minority rights on both sides of the border. In the following months, Poland took over the territory of Upper Silesia which had been granted to it. The Third Silesian Uprising is part of the Polish national uprisings. It enabled the return of a part of Upper Silesia to the motherland, and its economic potential played a very important role in the reconstruction and development of the rest of Polish lands. The Silesians, in turn, were largely given opportunities for the development of their culture and social advancement in a free Poland.