The 1893 $10 has the dubious distinction of having the largest PCGS-certified population of any date in the entire 10 Liberty series (although the 1894 $10 is almost as plentiful). This was one of the dates exported in large quantities to European central banks by the United States government decades ago. Dealers began re-importing them back into America beginning in the late 1970's and 1980s, and the supply has been seemingly inexhaustible.
One might expect a large number of Gems from such a large population, but such is not the case. Rather, the overall quality of this date is generally poor, with the vast majority of survivors appearing in MS61 and MS62, suggesting excessive handling and movement of the bags in which the coins were stored. Thus, out of a population of over 17,000 PCGS-certified Mint State examples, only four have earned the MS65 grade