The South African mint has only produced 700 of the proof R5 coins worldwide, which makes this a very rare and unique coin, in the 3- and 4-coin sets. Only 21 of the R5 with the grade PF69 Ultra Cameo exists. This will definitely add to the value of your collection. We only have three set available. Once it is sold you will most definitely never find a set like this again.
 
From the SA Mint "2018 marks 100 years since the birth of Nelson Mandela and we are proud to honour his legacy with a new coin range.
The new coins are the second installation in the “Celebrating South Africa” theme, through which we celebrate milestones and symbols of South Africa’s freedom, democracy and culture. The first coin series in this theme was the 2017 OR Tambo Centenary range (see 2017-coin range).
Each meticulously crafted coin allows us to look back at the remarkable stages of Mandela’s life, and his struggle for justice, human rights, and a free and democratic South Africa."