Indo-Greek coins were produced from 300 BCE to 100 BCE in areas now encompassing Afghanistan, Pakistan, and India. Two important Indo-Greek kings discussed are Eucratides I, who ruled from 171-145 BCE, and Menander I, who ruled from 165/155-130 BCE. Indo-Greek kings are primarily known through their coinage, which provides important historical information about the rulers and their territories. Eucratides I produced both Bactrian and Indo-Greek coins in various metals and denominations to commemorate his conquests in modern day Afghanistan, Pakistan, and India.