Spain. Carlos III. 8 Reales Acuñados en ceca de México, 1786. Ensayador F·M. (No reserve price)

The 8 Reales coin minted in the Mexico City mint in 1786 under King Carlos III of Spain is a prime example of Spanish colonial coinage. Commonly referred to as the 'piece of eight,' the 8 Reales played a major role in global trade as one of the most widely circulated silver coins of its era, often used far beyond Spanish territories. The presence of the assayer mark 'F·M' helps identify the specific officials responsible for the coin's quality and authenticity during minting. Coins of this period showcase the intricate heraldic designs and royal portraits emblematic of the Spanish monarchy and are sought after by collectors interested in colonial coinage and the era's economic history.