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What PROOF and UNC Mean for Coins
The condition and quality of a coin’s strike directly affect its collectible and investment appeal. Descriptions often include the labels PROOF and UNC,...


This commemorative coin of Kazakhstan is dedicated to Kanysh Satpayev, an outstanding scientist, geologist, and one of the key figures in the development of national science. Its issue marks the 125th anniversary of his birth and reflects respect for his contribution to the study of mineral resources and the establishment of the Academy of Sciences of Kazakhstan. The coin combines .925 silver and .999 tantalum, giving it a distinctive artistic character and emphasizing the importance of the theme. With a weight of 74.00 g and a face value of 2,000 tenge, it is not only a collectible piece but also a tribute to a man whose work influenced the country’s industrial and scientific progress for many decades.