The 1891-O Morgan dollar has the distinction of mintage under three separate authorizations - the 1878 Bland-Allison Act and 1890 Sherman Silver Purchase Act which mandated government purchases and coinage of silver bullion, and the 1891 Trade Dollar Recoinage Act - which mandated the melting of Trade silver dollars for restriking into Morgan silver dollars. Add the historic 1891-O Morgan dollar to your collection!