6 enamelled stoneware knife holders

Set of 6 knife holders or cutlery rests in enamelled stoneware. Not signed but resembles the work of gustave tiffoche (they were in a stoneware collection with a lot of tiffoche). So certainly around the 50s-60s. Very original staircase shape. They are all in beautiful condition, with different shades. The size may differ slightly between them but they are approximately: length: 6.5 cms width: 4 cms height: 2 cms at the highest.