Not a particularly desirable pattern. The ribs may run either vertically or horizontally as shown in these two examples of salt and pepper shakers. Both sold in 2013, the example on the left for $15, on the right for $20. The style is found in other shapes, often vases.
[pdb_list filter='pattern=Melon Rib' sort=true orderby=”shape,color,price” order=”asc,asc,asc”]