Production of silver 1 Reichsmark coins ended in 1927. In 1933, nickel 1 Reichsmark coins were introduced, and new silver 2 and 5 Reichsmark coins were introduced which were smaller but struck in .625 and .900 fineness so as to maintain the amount of silver. Between 1933 and 1939, a number of commemorative 5 Reichsmark pieces were issued. Production of the 3 Reichsmark coin ceased altogether. In 1935, aluminium 50 Reichspfennig coins were introduced, initially for just the one year. In 1937, nickel 50 Reichspfennig coins were issued and continued to be produced up to 1939, before reverting to aluminum. From 1936 on, all coins except the 1 Reichsmark and the first version (1935–36) of the 5 Reichsmark coin (bearing the image of the late Reichspräsident Paul von Hindenburg) bore the Nazi state insignia. The eagle had two standard designs on most coin denominations, a soaring eagle and large swastika depicted on most earlier issues, and a more "aggressive" eagle with less prominent swastika which became predominant in the 1940s.