Fig. 7From: Analytical study of an 1899 Peruvian dinero: unveiling the mystery of a coin that wasn’t officially mintedDetailed images of selected sections of the 1899 coin. a obverse and b reverse. The remnants of an old silver-plated layer are clearly seen in images (1), (2) and (3). Surface roughness and what appear to be cast bubbles are shown on (4), (5) and (6)Back to article page