This is a pair of 1806 and 1808 with chopmarks  Mexico Silver 8 Reales coins featuring Carolus IIII Mo/ST, F.M./P.P. These coins are composed of 90% silver and are uncertified. They were minted in Mexico during the Colonial period up to 1821. The coins are being offered with free shipping, making it a valuable addition to any coin collection or investment portfolio.