50 Euro cent KM#3141 7.8000 g., Brass, 24.25 mm. Obv: secession building in Vienna, illustrating the birth of art nouveau in Austria. The building symbolises the birth of a new age and represents a bridge to a new monetary era. Rev: Expanded relief map of European Union at left, denomination at right Edge: Reeded Obv. designer: Josef Kaiser Rev. designer: Luc Luycx