Set of four Dickota Art Pottery Crab dishes for crab imperial hard to find

Here are four scarce pieces of Dickota art pottery dishes; these were meant to bake crab imperial I believe. No chips or cracks, they are unmarked but are on page 51 of the Dickota catalog. They measure 4" x 1 3/4" for the bowl itself and 7 3/4" x 4" overall.