From Wayne Sayles' vcoins.com store
http://www.vcoins.com/ancient/sayles/store/dynamicIndex.asp

 Coela, Thracian Chersonesos: Septimius Severus / Prow

 AD 193-211, AE 19, Laureate bust r. / Prow right with palm 
 branches above.  Dark brown patina with lighter green fill.  
 Nice VF and very rare.  Moushmov 5569v. (legend variations) as 
 Municipia.  Not in BM, Copenhagen, Lindgren.

Price 
  US$ 250  euro 207.85
 £ 142.62
 AUD$ 336.06
 CHF 324.83
 CAD$ 283.80

Rates for 3/3/2006