Namibia on the map: using coins of South Africa before 1993

Before 1993, Namibia used the coins of South Africa, as it was ruled by South Africa as "South West Africa".

Shouldn't this be reflected on the map?

Problem is that pre and post 1993 South African coins are located under the same issuer, so if I had 100 2010 1 Rand coins, they would show up on my map over Namibia as well as if I had 100 1967 1 Rand coins- which kind of defeats the purpose of your request in the first place.