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The obverse of a 25 euro commemorative coin released in Austria in 2004. The obverse of the coin shows an historical and a modern locomotive, representing the technical development in locomotive construction between the years 1854 and 2004. This side depicts the “Taurus”, a high performance locomotive from the construction series 1016, while the reverse (not shown here) showed the first functional Alpine locomotive constructed by Wilhelm Freiherr von Engerth. The coin has a silver ring and the colour of the niobium “pill” is green, reflecting the land through which the train travels. The image is also used in Locomotive.
The obverse of a 25 euro commemorative coin released in Austria in 2004. The obverse of the coin shows an historical and a modern locomotive, representing the technical development in locomotive construction between the years 1854 and 2004. This side depicts the “Taurus”, a high performance locomotive from the construction series 1016, while the reverse (not shown here) showed the first functional Alpine locomotive constructed by Wilhelm Freiherr von Engerth. The coin has a silver ring and the colour of the niobium “pill” is green, reflecting the land through which the train travels.
Niobium is sometimes used in high value coins together with more precious metals such as gold and silver. The surface of the niobium pill is specifically oxidized to give the desired green reflecting color in the center of the coin.
Fair useFair use of copyrighted material in the context of Niobium//en.wikipedia.org/wiki/File:2004_Austria_25_Euro_150_Years_Semmering_Alpine_Railway_front.jpgtrue
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