Are there any know varieties or errors in these sets? Seems I remeber something of a variety of some sort or another... I am thinking of selling my sets and I noticed that the Bullion coin is noticeably different than the uncirculated coins. The bullion coin in one of the sets is especially frosted compared to the other coins. The entire coin has the apppearance of the devices on the proof. Are these just normal variations of the BU and bullion coins? Lack
