Ron Guth: The 1852 Three Cents Silver boasts the highest mintage of the entire series. In fact, its mintage of 18,663,500 coins is more than seven million coins higher than the nearest contenders (1853 and 1865). As might be expected, this is a common coin in just about every grade. To be sure, it has the highest overall certified population of any date in the series (per the PCGS Population Report as of October 2011).
The most common Mint State grade is MS-64, followed by MS-63 (with a nearly identical population figure). Above MS-65, the population drops sharply, especially in MS-67. The finest examples certified by PCGS are a pair of MS-68s.