Australian kangaroo gold casting coin 1. Material: brass, zinc alloy, copper, iron etc. Australian kangaroo gold casting coin1. Material: brass, zinc alloy, copper, iron etc.2. Process: die-cast, stamping, hot-cast, printing, photo-etches are available.3. Finishing: various electric plating colors such as gold, imitated gold, silver, antique silver, copper, chrome, nickel and finishing are ...