The Austrian Mint has started accepting orders for the latest 25 euro silver and niobium coin, which highlights Austria’s long and influential contribution to tunnel construction.
Each year since 2003, the Austrian Mint has released a coin composed of an outer silver ring and colored inner niobium core to explore a range of technological themes. The series has featured intricate designs with an array of colors created through anodized oxidation, whereby a thin oxide layer is produced to enable different colors to arise.
The 2013 Tunnel Construction 25 Euro Coin features a present-day runnel boring machine positioned within the ice blue niobium core. There are three arrow to show the rotating motion of the machine. The outer silver ring shows the mountains which the machine pierces. The reverse design shows a road tunnel within Austria’s alpine landscape. The silver ring contains an image of a worker using a drill to loosen rock. The word “Tunnelbau” (tunnel construction) appears at the base.
The coins are produced in special uncirculated quality with a maximum mintage of 65,000 pieces. Each coin contains 9 grams of .900 silver and 6.5 grams of .998 pure niobium. Each coin comes in a capsule and outer box 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.
Previous 25 euro silver and niobium coins have featured the themes Fascination Light, Austrian Aviation, European Satellite Navigation, 50 Years of Television, 700 Years of Hall in Tyrol, International Year of Astronomy, Renewable Energy, Robotik, and Bionik.