What is the fine-grained topic of the following text: LOW LIMITED EDITION – The South African Mint struck just 50,000 Fiftieth-Ounce Gold Krugerrands Proofs in 2018, a number far too low for all the people in the world who would like to add one to their collection.They are sold out at the mint. Only return the topic.
Limited edition 2018 Fiftieth-Ounce Gold Krugerrands from the South African Mint.