The term "Spanish pieces of eight" refers to a silver coin that was widely used during the 16th to 19th centuries. Officially known as the Spanish dollar, it was valued at eight reales and became a standard currency in international trade. The coin was made of high-quality silver and featured various designs, including the Spanish coat of arms and the Spanish crown. Pieces of eight were popular among traders and pirates alike, often being cut into smaller pieces for easier transactions. They played a significant role in the global economy, influencing the development of currencies in the Americas and beyond. Their legacy continues today, as they are often associated with tales of treasure and adventure.