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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 500 tenge silver coin, struck in Ag 925 with a weight of 41.40 g, is dedicated to Buran, the orbital spaceplane developed for the Soviet reusable space transportation system. The issue reflects an important chapter in the history of space exploration closely connected with Kazakhstan, since the Buran programme was linked to launches from Baikonur. Buran completed its first and only mission on 15 November 1988, when it flew in unmanned mode and successfully returned after orbiting the Earth. The coin commemorates this remarkable technological achievement and highlights the role of advanced aerospace engineering in the late twentieth century. Its theme continues the tradition of honoring major milestones in science and space history.