Most silver buyers are going to view these as Generic Silver Rounds, worth nothing more than a standard 1 ozt of silver plus whatever premiums are common at that time in the market. Collectible value beyond commodity value, like any other market, is determined by supply and demand. Supply is relatively low. So it's all about demand. Collectible markets are entirely dependent on how many people want them. If the CWC story becomes increasingly mainstream news, and the demand for the existing coins stretches beyond this side of the internet, market value will increase, though not likely to a realm that's going to be shocking. Even highly popular (Star Wars, Simpsons, Marvel, Disney, etc.,) limited run pieces (5,000 ozt or less) rarely surpass a few hundred dollars at full retail.
But there are exceptions to every rule.