From the Eukraides Numismatics vcoins.com store:
http://www.vcoins.com/ancient/eukratides/store/dynamicIndex.asp

Syria, Seleucid Kings. Seleukos I Nikator. 312-280 BC. AR Tetradrachm (16.96 gm,25 mm). Babylon  mint. Head of Herakles right, wearing lion's skin headdress / Zeus seated left, holding eagle in right hand, sceptre in left; monogram below throne. SC 69.4.  ANCHOR ERASED FROM DIES. A rare type, nicely toned.

	
Price
  US$ 300.00 	 euro 237.33
 £ 163.38
 AUD$ 397.81
 CHF 370.81
 CAD$ 338.22
Rates for 7/14/2006