This is a classic polychrome jar by Blue Corn.  It was originally purchased in 1976.  Blue Corn began by making black-on-black pottery but it is her polychrome potter for which she is the most famous.  This water jar is fully polished tan and then it is painted.  The black is a black clay and there is an additional red or peach colored clay slip.  The jar has a feather pattern painted along the shoulder and neck.  Around the rim of the jar is a checkerboard pattern.  The jar is in good condition with no chips, cracks, restoration or repair. There are some small areas where the black is lighter.  The jar is signed on the bottom in the clay, “Blue Corn”.