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 one-ounce (1 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 Kruggerands retained their specifications (22-carat gold) while other coins issued after 1994 are 99.99% gold; just as the Krugerrand though, they contain exactly one ounce of pure gold or 1oz Absolute Gold Weight (1.000 oz AGW).
This coin was issued as part of the 2017 Celebrating South Africa coin series, which celebrates milestones and symbols of South Africa’s freedom, democracy and culture.
The mint says:
"In 2017, the South African Mint introduced the theme of Celebrating South Africa. Fittingly, the same year marks the centenary of the birth, on 27 October 1917, of Oliver Reginald Tambo. This product series commemorates his legacy by depicting the roles he played at various stages of his life and political career in securing a free, democratic and culturally dynamic South Africa
"Comrade OR", as he was affectionately known, was a founding member of the African National Congress (ANC) Youth League and between 1944 and his untimely passing in 1993, took on various leadership roles in the party including General Secretary, National Chairperson, Deputy President and President.
Although "Comrade OR" did not fully experience the liberated and democratic dispensation we now enjoy, he spent the better part of his life standing up for those very ideals - for this, his legacy lives on.
The series consists of a 1 oz pure-gold R500 proof coin, a 1 oz sterling-silver R50 proof coin, a base-metal R50 non-circulating legal tender coin and R5 commemorative circulation coin." | 
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