While the 1866-S No Motto double eagle is clearly the more elusive of the two issues, its mintage and distribution remain enigmatic. While many sources, including the Guide Book and Doug Winter and Adam Crum?s An Insider?s Guide to Collecting Type I Double Eagles, claim a mintage of just 12,000 pieces, Garrett and Guth, in their 2006 volume Encyclopedia of U.S. Gold Coins, state an estimate of 120,000 coins. This latter figure is in agreement with research conducted by R.W. Julian, and the value is logical, with the With Motto reverse dies not arriving at San Francisco until March, that Mint had an ample window for a six-figure production, even if striking only took place in February, as stated by Winter and Crum. The mintage for the later With Motto pieces, in excess of 840,000 pieces, offers further circumstantial evidence.