Known as the "1 Tonne Gold Kangaroo Coin" and with a face value of one million dollars, it contains one metric tonne of 9999 pure gold, and is approximately 80 cm in diameter by 12 cm thick.
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The following are circulation figures for the one rin coin, all of which were minted between the 6th, and 25th year of Meijis reign.
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The eagle had two standard designs on most coin denominations, a soaring eagle and large swastika depicted on most earlier issues, and a more "aggressive" eagle with less prominent swastika which became predominant in the 1940s.
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