Karthaea on Keos, Cyclades. 3rd Century BC. AE19mm (6.11 gm). 

Laureate head of Apollo right 
KARQA around, forepart of a dog (Seirios) right surrounded by rays; fly below. 

Papageorgiadou-Banis, The Coinage of Kea, Series VIII, Issue 1 
(O46/R56); SNG Cop 634; BMC Crete pg. 93, 44 var. (Seirios right); 
Weber 4635. 

VF, dark brown patina, small flan flaw on the obverse. Rare. ($400)

The Dog Star Seirios (Sirius), to whom propitiatory sacrifices were 
made, was associated with the heat of summer, drought and 
pestilence.
Sale: Triton V, Lot: 391. Estimate $400. 
Closing Date: Wednesday, 16 January 2002. 
Sold For $525. 

With permission of cngcoins.com