The god holds the kantharos in his right hand. We know that on Spartan sepulchral steles this two-handled drinking vessel (the kantharos) was represented as an attribute of the heros.
Keréñyi establishes the kantharos as the definitive attribute of the Dionysiac herm-idol and its sepulchral function, anchoring the vessel firmly in the cult of the heroized dead.
, Dionysos: Archetypal Image of Indestructible Life, 1976thesis