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Railtrack in the background, circle with the legend in the foreground. HISTORIA...
Stylized branches and leaves in the background. ANIMALES EN PELIGRO DE EXTINCION,...
Legend surrounded by a stylized castle wall. 1,5 EURO, CASTILLOS DEL MUNDO
The reverse depicts the head of an Iberian lynx. 1,5 EURO, LINCE IBERICO, 2021