A number of Peloponnesian coins of the 4th and 3rd century BC have been ascribed to the Arcadian Koinon, which flourished between 370 and 362 BC. They not only include the very well known staters and triobols with depictions of Zeus and Pan, but also smaller denominations ranging from obols to bronzes. With the exception of the staters and triobols these coins have been studied so far only superficially. In my paper I will present the latest chronological overview of these coins, and discuss their denominations and iconography. I proceed to analyse their very peculiar distribution in the Peloponnese and reevaluate their role as a “federal coinage”.