Thaler
The thaler is an old silver coin which appeared in the middle of the fifteenth century and which circulated in Europe for nearly four hundred years. Its size and weight, relatively large, varied somewhat over time, and its initial popularity remains linked to the development of silver mines operated on the lands of the Holy Roman Empire. Becoming a currency of account under Charles V, the thaler had a great impact on the world economy in the seventeenth and eighteenth centuries, and is considered the ancestor of the American dollar.