Top Prices Paid For Coins, Banknotes And Medals. Coin Dealers - Sydney, NSW . Product: Banknotes. Payment Method: American Express, Cheques, Diners Club, EFTPOS, Mastercard, Money Order, Visa. Service Option: Mail Order. Material: Bullion. Company: Perth Mint, Royal Australian Mint, Royal Canadian Mint, South African Mint. Payment Concern: Consignments