Lydia

Lydia (; ) was an Iron Age kingdom situated in the west of Asia Minor, in modern-day Turkey. Later, it became an important province of the Achaemenid Empire and then the Roman Empire. Its capital was Sardis.

At some point before 800 BC, the Lydian people achieved some sort of political cohesion, and existed as an independent kingdom by the 600s BC. At its greatest extent, during the 7th century BC, it covered all of western Anatolia. In 546 BC, it became a satrapy of the Achaemenid Empire, known as ''Sparda'' in Old Persian. In 133 BC, it became part of the Roman province of Asia.

Lydian coins, made of electrum, are among the oldest in existence, dated to around the 7th century BC. Provided by Wikipedia