Watch List notes:

Austria, Republic, Proof 25-Euros, by Austrian Mint, in silver niobium [15], 700 Years of Tyrol Hall, 2003 {20447}; 150 Years of Semmering Railway, 2004 {33751}; 50 Years of Television, 2005 {03705}; European Satellite Navigation, 2006 {55372}; Austrian Air Travel, 2007 {00086}; 'Wonder of Light', 2008 {05962}; International Year of Astronomy, 2009 {16417}; Renewable Energy, 2010 {14656}; Robotics, 2011 {03090}; Bionics, 2012 {51747}; Tunnel Building, 2013 {34668}; Evolution, 2014 {35828}; Cosmology, 2015 {44441}; Time, 2016 {47977}; The Microcosm, 2017 {46359}, all brilliant uncirculated with special niobium colouring, in mint cases of issue [15].