The 1829 Curl base 2 is an extremely rare and much sought after variety. In 25 years, PCGS has only graded a couple of dozen examples, and so far the highest graded was VF35. This coin probably does not exist in Mint State and may not even exist in AU (Almost Uncirculated 50-58) or even EF (Extremely Fine 40-45)!!!!!!
Louis Scuderi wrote in the January 2012 edition (#70) of the JR Newsletter that he knew of at least 40 confirmed/documented examples of this rare die variety. Most of the new examples are in low grade and several have shown up unattributed on eBay.