From Ken Dorney's vcoins.com store
http://www.vcoins.com/ancient/kendorney/store/dynamicIndex.asp

Maximinus I AE28, Serapis

Maximinus I, 235 - 238 AD

	
Price
US$ 125.00 	 euro 93.02
 £ 62.58
 AUD$ 147.38
 CHF 153.96
 CAD$ 133.45
Rates for 6/22/2007