1oz Silver krugerrand Space Green coin value

Please can you tell me what my 2019 1oz Silver Krugerrand Space Green and Red coins are worth both limited to 500 coins 

They re-colour a bunch of these every year…

https://www.powercoin.it/en/257-south-africa

The intrinsic (silver) value is about ZAR 530, despite the original inflated price tag.

Aftermarket coloured bullion coins rarely go up in value, they're worth what you can get for them.

Thank you