1994 inauguration R5 coin what is it worth?

Ungraded, the first day cover with the proof coin is selling for round about R1600 - R1800 per coin.

You can pick up a graded proof coin for R1000 and upwards, depending on the grade. The proof 68 is selling for about R1500 and the proof 69 for about R1800 - R2500.

In my opinion you should buy as many of the first day covers as you can, get them graded and hold on to them for at least 5 to 10 years. I'm not able to tell you what they will be worth, but I can tell you they will be worth a lot more.

Stay far away from uncirculated and circulated coins. These coins will NEVER be worth more than R5.