Another new release from the Austrian Mint is the latest 25 euro silver and niobium coin, which carries a theme of Evolution. For the first time ever, the inner niobium core features two different shades of color.
Designed by Helmut Andexlinger, the obverse of the coin depicts DNA and RNA as the keys to evolution. Inscriptions in the outer ring include “Republic Österreich”, the “2014” date, the denomination of “25 Euro”, and “Evolution”.
The reverse presents images dealing with the history of human development and the diversity of forms of life brought about by evolution. The central feature recalls the famous scientific illustration “March of Progress”. A toucan represents life in the air, while a fish and frog represent life in the water and its evolution to land based creatures. A mushroom appears as a complex biological organism. The design incorporates bubbles to represent oxygen’s role in life.
Each coin consists of an outer ring of .900 fine silver with a weight of 8 grams and an inner core of .998 fine niobium with a weight of 6.5 grams. The niobium carries a green background color with relief elements in aqua blue. The different colors are created through anodized oxidation, whereby a thin oxide layer is produced to enable different colors to arise. Previous coins have featured only a single color within the niobium core.
The coins are struck in special uncirculated quality with a mintage of 65,000 pieces and come in a case with numbered certificate of authenticity.
The product page on the Austrian Mint website can be found here. These coins will also likely be widely available from world coin dealers.