What is Lydian coinage?
Could you elaborate on the concept of Lydian coinage? I'm particularly interested in understanding its historical significance and impact on the development of currency systems. Specifically, I'd like to know about the unique features of these coins, their materials of origin, and how they influenced trade and economies in the ancient world. Was there anything particularly innovative about the Lydian coinage system that set it apart from its contemporaries? Additionally, how did it contribute to the evolution of currency systems that we see today?