The design of the hydria allowed for the efficient collecting and pouring of liquids as it had three handles: two horizontal ones at its sides and a vertical one on its back. The shape of the hydria was altered in the 5th century BC from having a wide body and broadly rounded shoulders, to a design that incorporated flatter shoulders that met the body at an angle. This was done to ease the task of carrying water to and from the home and places of gathering. The hydria cart was apparently an emblem of the city of Krannon; it was sacred to Zeus and it was customary in times of drought to take a hydria cart in a procession through the city, while items placed in the hydria made thunder-like noises to cause rain fall and to ask Apollo for rain; if two crows (ravens) settled on the wheels, that was a sign that Apollo would grant the prayers. This coin came with a flip from Kenneth W. Dorney at www.coolcoins.com Æ Chalkous Thessaly, Krannon, 400-344 BC. 16 mm, 3.94 g BMC 47-48; Rogers 203; BCD Thessaly 120.2 Ob: Anepigraphic. Head of Zeus, laureate and bearded to r. Rev.: KPANNoYNIoYN Hydria mounted on two wheels on each of which stands a raven or crow facing inwards; below monogram ΠΛΕ (?) Not sure about the monogram maybe I'm seeing things that are not there... Obverse picture courtesy CNG; Reverse picture is mine. Please share your coins from Thessaly or anything relevant.