BITHYNIA, Kings of. Prusias II. 182-149 BC. Æ 21mm (3.90 gm). Wreathed
  head of Dionysos right / BASILEWS right, PROUSIOU left, Centaur
  walking right, playing a lyre; monogram right. SNG Copenhagen 635ff
  var. (monogram); BM Pontus pg. 211, 14; SNG von Aulock 256 var.
  (same); Laffaille 430 var. (same); Waddington Recueil, pg. 225, 26.
  Near EF, grayish-green patina, old scratch on reverse. ($200)

Triton V Sale, 15 Jan 2002, lot 427.
 
 Lot sold for USD 185.

Used by permission of CNG, www.historicalcoins.com

From the Triton V Sale, January, 2002.

Used by permission of Classical Numismatic Group, www.cngcoins.com.