RIA “Novosti” informs that on Monday, July 28, the National Bank of Kazahstan puts into circulation a silver commemorative coin of 500 tenge denomination from the series "Red Book of Kazahstan" devoted to rare disappearing species of animals of the Republic (fine metal content 24 g, fineness 925, diameter 37,0 mm, thickness 2,7 mm). The silver coin “Drofa” is the forth coin from this series.