David Akers (1975/88): The 1887 is a relatively scarce date in all grades, comparable overall to the 1881-S and a little more rare than the 1880-S and 1890-S. It is not as rare in Unc., however, as either the 1880-S or 1881-S. In choice mint state the 1887-S is very scarce and gems are notably rare. A few really superb examples of this date are also known including the Unc-67 coin that is in a prominent Dallas Bank collection.
The Saddle Ridge Hoard of gold coins, discovered in northern California in 2013, contained only eleven 1887-S Double Eagles. One was ungradeable due to cleaning, but three were Mint State.