None graded higher!
This coin contains one Troy ounce of gold. Depicted on both the obverse and the reverse are sable antelopes. This piece is uncatalogued due to the commemorative nature of the mintmark. To launch this design, the South African Mint actually struck 700 proofs at the Pretoria Zoo. These 700 proofs bear the commemorative mintmark, PTA ZOO. KM#261.
NGC has certified this example as Proof-69 Ultra Cameo. None are currently graded higher in the NGC census! The mintage for this coin is just 2,645 proofs.