This 10-euro coin is a commemorative coin issued by the Federal Republic of Germany to celebrate the 150th anniversary of the birth of Max Planck in 2008. It is a silver coin that is in extremely fine condition, weighs 18 g, and has a diameter of 32.50 mm. Its obverse side shows a stylized German eagle and twelve stars. Its reverse side features a representation of the radiation spectrum and the left profile of Max Planck.