Two Small Lidded Bowls (Kähler Pottery), ca. 1930

Two small lidded bowls (perhaps jewelry boxes?) produced at the Kähler Pottery in Denmark in the late 1920's or early 1930's. One is decorated with a speckled orange uranium glaze, the other with black and turquoise glaze, the so-called 'matte lustre' invented by Jens Thirslund in 1926. I've seen one of these bowls with a yellow uranium glaze, but it was quite expensive, so I didn't buy it... I've added two pictures of two unlidded bowls (possibly cigarette holders), one with the same orange uranium glaze, and one with the yellow type (just for comparison).

Dimensions: diameter 6 cm; height 3 cm. Mark: HAK for Herman A. Kähler, and 'Denmark'. Unlidded bowls - diameter 7.5 cm; height 6 cm.