At 3000g of pure silver I'm sure they made very few. As far as value I'd assume with silver today at $52/oz the current melt value is all you could sell it for.
The market for a coin with $5000 of silver in it is pretty small. People buying silver coins as an investment would rather buy 100 1 oz. coins than 1 100 oz. coins, much easier to liquidate some of the silver.