Exist a wide diversity of gilded-based objects corresponding to the early intermediate historical period. At this time, it might be thought that there was limited knowledge of electrochemical processes. However, the quality of excavated gilded pieces, such as the gilded coppers from cultures of northern Peru, suggest that the goldsmiths possessed a valuable metallurgical understanding. In this sense, some of the techniques that have been proposed are casting, embossing, electrochemical replacement, and depletion gilding.
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