The CHRONOLOGY of COCA
2500-1800 BC In Northern Peru a remarkable finding of traces of Coca leaves in the area of the ruins of Huanca Prieto.
2100 BC In Valdivian culture of Ecuador and in ceramics of Nazca and Mochica cultures in Peru (600-360 BC) relevant findings of traditional use of Coca.
1200-1475 A kind of oils essence extracted from Coca leaves was used by Incas, when practising surgical excision of brain tumors.

Muchas gracias por el comentario. Le agradecería de antemano unos detalles sobre el museo que Ud menciona.…