From the Wayne Sayles vcoins store:
http://www.vcoins.com/ancient/sayles/store/dynamicIndex.asp
                   
                  Egypt, Alexandria: Galba / Kratesis

                  Year 1 (AD 69-9). Bn tetradrachm , 23mm. Laureate head of 
                  Galba to right / Kratesis standing to left, holding trophy and 
                  Nike. aVF, Emmett 173(1). 

                        Price 
                          US$ 95  € 75.19
                         £ 51.70
                         AUD$ 125.23
                         CHF 116.20
                         CAD$ 119.92

                        Rates for 5/19/2005