South Africa pioneered modern bullion coinage when it first issued the Krugerrand on 3 July 1967 to help market South African gold; it is the first modern bullion coin and is still issued today.
Gradually, the South African Mint started diversifying the range, first by issuing fractional Krugerrands, then by introducing different designs to the gold tenth-ounce (1/10th oz) format. These include the Protea series, the Natura series, as well as one-year types that do not fall into a particular series. The tenth-Krugerrands retain their specifications (22-carat gold) while the other coin series issued after 1994 are 99.99% gold; just as the quarter-Krugerrand though, they contain exactly one tenth of an ounce of pure gold or 1/10 oz Absolute Gold Weight (0.100 oz AGW).
The R1 (1/10oz) pure gold coin was re-introduced in 1997 as a commemorative coin. In 2015, the the theme South African Reptiles was added to it, with this coin featuring a Nile crocodile (Crocodylus niloticus).
The Nile crocodile is the only crocodile species in southern Africa. Fewer than an estimated 12,000 remain in protected natural areas.
The animal is one of the largest living reptiles; it grows to 3 metres in the wild. Its robust body and tail are covered with horny scales. The reptile has a long snout with large teeth, and its eyes and nostrils protrude from the water when the crocodile floats just below the surface.
Active day and night, Nile crocodiles inhabit rivers, lakes, swamps and estuaries. They often bask in the sun, their mouths agape. At night they move into water to keep warm. This is also when they do most of their hunting; adult Nile crocodiles prey on fish, large mammals and birds.
The Nile crocodile belongs to the Crocodylia order. Besides birds, it is the only living representative of the ancient group Archosauria, which emerged over 220 million years ago. | 
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