The 1887/6-O overdate occurred when some 1886 dies for the Morgan dollar were retooled and punched with a 7, thus creating this overdate. A popular variety, the 1887/6-O Morgan is a scarce coin of which only a fraction of all survivors is in MS grade. Above MS63 this piece becomes very challenging and in MS64 or above it is rare. If any PLs and DMPLs exist, they are essentially unknown.