From John Jencek's vcoins.com store. See http://www.ancient-coins.com/

F038: MAXIMINUS I A.D. 235-238 : AE dupondius. MAXIMINVS PIVS 
AVG / SALVS AVGVSTI S C. Salus seated left, feeding out of 
patera a snake rising from altar, resting left arm on chair. 
RIC 86. XF 

      Price 
        US$ 275  euro 234.57
       £ 160.33
       AUD$ 373.87
       CHF 362.90
       CAD$ 321.53

      Rates for 11/25/2005