Ron Guth:
The 1909-D $10 Indian is only semi-scarce but it is quite difficult to locate a Gem example without breaking the bank. The number of Gems known to Akers reflects what is known today -- that only a handful of coins qualify at the MS66 and better levels. Akers enumerated several pieces in his earlier write-ups, and all of those had withstood the test of time. He mentioned two MS65+ examples in his personal collection, and we're not sure what happened to them, but we can expect them to be extraordinary considering his accurate (if not conservative) grading. In top grades, the 1909-D has proven to be a six-figure coin -- an acknowledgement of the extreme popularity of this series.