From the romanlode vcoins store: 
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            Galba brass dupondius

            Galba brass dupondius. Slight earthen encrustation. Sear 2129. 12.0 
            g, 28.5 mm. OBVERSE: Galba right,SER GALBA IMP CAESAR AVG TR P. 
            REVERSE: Pax standing left holding olive branch and caduceus, PAX 
            AVGVSTI SC. 
            Price 
                    $ 180   € 142,46
                    £ 97,95

                  Rates for 5/19/2005