This is a classic water jar by Margaret & Luther Gutierrez.  Margaret would make the pottery and her brother Luther would paint the designs using natural clay slips.  This jar has a very intricately painted water serpent encircling the piece.  Note how the body of the avanyu (water serpent) is made up of numerous different designs and a variety of colors.  The jar is an early piece of their work together, which can be seen from the use of the peach color on the head of the avanyu and the tightly painted imagery.  All the various colors are from natural clay slips and this was a signature style of their work. The jar is signed on the bottom, “Margaret / Luther”.  It is in very good condition with no chips, cracks, restoration, or repair.