vintage ceramic ducks pair of ashtrays mallard drake and hen, mid century USA pottery, Rosemeade

Pair of vintage mallard duck ashtrays, probably mid century USA pottery (no makers marks, but three stilt marks on the bottom of each). These look like Rosemeade pottery to me.

Size is about 6 1/2" long. Both have some crazing and discoloration (in varying degrees) from age and use, though no chips or cracks.