Spain 10 Euro 2010 Gaudi's Sagrada Familia. Juan Carlos I (1975-2014). Obverse: Portrait of S. M. the King of Spain; Don Juan Carlos I. Lettering: JUAN CARLOS I REY DE ESPAÑA · 2010 ·. Reverse: On the reverse; the 'Temple Expiatori' of the Sagrada Familia; in Barcelona; is reproduced as the central image. On the left; the portrait of Antoni Gaudí. Below, the common brand adopted by the countries that issue currencies dedicated to the Europe Program. Lettering: ANTONI GAUDI 10 EURO M. Edge Reeded. Silver (.925) 27g. KM 1169