In short, no. 10,000 is far too many. Don't touch modern coins with higher than 1000 mintage. If you want to invest in gold, buy bullion sovereigns at up to 10% or 15% over Bullion. And a Quarter Sovereign, what on earth is a Quarter Sovereign!!?? 5 Shillings, so that makes it a crown doesn't it? Normally a silver coin. The RM have invented a new denomination priced around the price a sovereign would have been a couple of years ago just so that more people can afford them and so that they can sell small amounts of gold for way way over it's actual value.