These are Proof Krugerrand in the SA Mint leatherette case.
In 1967 the SA Mint minted their first Krugerrand. It was decided to produce Proof Krugerrand gold coins as well as Bullion Krugerrand gold coins. There are many web sites that will give you information on Krugerrand so this web site has been dedicated to the Proof Krugerrand and its derivatives.
Today it is very simple to spot the difference between a Proof Krugerrand and a Bullion Krugerrand. The main differences are the fine reeding on the Proof Krugerrand. The lettering and images are frosted and the fields are mirror finished.
This was not the case with the 1967 Proof Krugerrand where the reeding was the same as the Bullion Krugerrand Gold coin and only the fields were mirror finished. So a polished Bullion Krugerrand gold coin could be made to look like a Proof Krugerrand.
As you can see the fields on a Proof are like a mirror finish and the inscription and images are highly frosted.
After 1977 all Proofs had fine reeding.
After 1977 all Proof Krugerrand had fine reeding. The left hand picture is a Proof Krugerrand and the right hand side a Bullion Krugerrand. It is easy to see the difference between 180 Reeds on the Bullion Krugerrand and the 220 on the Proof Krugerrand. Counting them is a waste of time.
After 1995 all Proof Krugerrand came with a Certificate of Authenticity.
Set of Proof Krugerrand's 1 oz, 1/2 oz, 1/4 oz and 1/10 oz. This is the wooden Prestige set.
The South African Gold Coin Exchange started to slab Proof Krugerrand years before the likes of NGC. This Proof Krugerrand had a Grade of 103 out of a maximum of 105.