Since 1979, the mint has pioneered high-purity Maple Leaf bullioncoins, selling about 20 million ounces of them around the world.
自从1979年推出高纯度枫叶金币以来, 加拿大皇家制币厂已经售出20万盎司的金币。
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Only those silver coins which were much worn by usage or in any other way defaced or reduced in weight remained in current use; it did not pay to export and to sell them on the bullion market.