the east, especially Corinth. In the early part of the archaic period, Athens does not seem to have been particularly actively involved in this eastern trade, and very few examples of eastern imports have been found in Athens from the eighth or early seventh centuries. By contrast, nearby Euboea had trade-links with the east as early as the first half of the eighth century, and the earliest pottery from the Greek islands found at Al Mina in modern Syria is from Euboea. By the sixth century, Greece was part of a trade network spanning the entire Mediterranean. Sixth century Laconian pottery has been found as far afield as Marseilles and Carthage to the west, Crete to the south and Sardis to the East. Coinage At the beginning of the archaic period, coinage had not yet been invented. The Greeks measured the value of objects or fines using certain valuable objects, such as oxen, tripods, and metal spits, as units of account. As in the Near East, precious metal bullion was used as a medium of exchange, principally gold at first, but mainly silver by the beginning of the sixth century. The weight of this bullion (often known as hacksilber) was measured using standard units, named for their value in terms of metal spits () and handfuls () of metal spits; these terms would later be used as names for Greek coin denominations. Coinage was invented in Lydia around 650 BC. It was quickly adopted by Greek communities in western Asia Minor, although the older system of bullion remained in use as well. The island of Aegina began to issue its distinctive "turtle" coins before 550 BC, and from there coinage spread to Athens, Corinth and the Cycladic Islands in the 540s BC, Southern Italy and Sicily before 525 BC, and Thrace before 514 BC. Most of these coinages were very small and were mostly only used within the community that issued them, but the "turtles" of Aegina (from 530 or 520 BC) and the "owls" of Athens (from 515 BC) were issued in great quantity and exported throughout the Greek world. The images on coins initially changed rapidly, but increasingly each community settled on a single image or set of images. Some of these were the symbol or image of an important deity in the city or visual puns on the city's name, but in many cases their meaning is