Hi Diane,
Quite the contrary. We offer a fully insured, fully free safe custody service for all of our clients. All of it is kept in bank guaranteed vaults and clients just need to give a 48 hour notice if they want to take them out or sell them. With R100,000 I would suggest a balance portfolio of both rare coins, such as Mandela's as well as a more liquid element such as the Krugerrands. The balance would be relative to the amount of risk you are looking at.