This is a rare 2017 Portugal 50 Cent Euro coin composed of brass plated steel with the design on the obverse side of the second royal seal of 1142 of Afonso Henriques, the first king of Portugal, is encircled by alternately the seven country's castles and the five coats of arms, which appear an the Portuguese flag, and the letters of the word "PORTUGAL", themselves encircled by the twelve stars of Europeand a map of European Union and denomination on the reverse side. This coin is a piece of Portugal numismatic history and a valuable addition to any coin collection and a unique prize item for coin enthusiasts.