Hi I'm looking to trade three 1972 Munich Olympics German 10 Mark Silver Coins for a 1 oz bullion coin or bar. Preferably I would like a bullion coin from australia, china, or mexico but I am open to all offers. Each of my 10 mark coins weighs 15 grams and is 62.5 percent silver. The total silver content of all three pieces together is about .93 of an ounce. The coins are in au condition. Pics available upon request