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 2018 R1 gold coin concludes the theme South African Reptiles on the 1/10oz 24ct gold coin which began in 2015 and featured the Nile crocodile, followed by the Cape dwarf chameleon in 2016 and the puff adder in 2017. It features members of the Testudines order which is represented on the reverse of the coin by the parrot-beaked padloper (Homopus areolatus).
The parrot-beaked padloper is part of a group of five species of very small tortoise endemic to southern Africa, and its species ranges from 70g to 650g in mass, while their flat rectangular carapace can vary in length from 60mm to 165mm. It is found in the coastal fynbos and is restricted to the southern Cape. Its colouration is toffee brown with yellow, orange and green, and is similar to the rocks and soil of its habitat, but during the mating season the nasal scales of the males change to a deep orange-red.
Reptiles of the Testudines order include turtles and terrapins, and are characterised by a special skeletal or cartilaginous shell developed from the ribs that act as a shield. | 
Search for South Africa: Gold Tenth-Ounce 2018 South African Reptiles - Padloper on eBay 