Clive Full Art Signature worth

The catalog data for the Clive Full Art Signature (Hidden Legends) card is not available for a detailed price breakdown at this moment. However, based on the information you provided that it has a used value of $850, this suggests it is a high-value collectible. To give you a more precise picture, I recommend looking at the live eBay listings shown on your screen to compare current asking prices against that sold value.