David Akers (1975/88): In terms of population rarity, i.e. the total number of specimens known, the 1891-CC is the third rarest Carson City Mint Double Eagle after the 1870-CC and 1871-CC. It is more rare than the 1878-CC or 1879-CC except in high grade, and it is much rarer than the 1885-CC in any condition. The majority of 1891-CC Double Eagles are EF or AU and all of then are semi-prooflike or prooflike. In average uncirculated condition (MS-60), the 1891-CC is very rare and relatively few are known. There are several choice uncs in existence but I have never personally seen a gem specimen.
D.L. Hansen Collection