Vintage blue ceramic coffee cups, set of 10 cups

This set of 10 vintage blue ceramic coffee cups are probably from the 1950s or 1960s. The appear similar to North Star cups, but they have no makers marks so it is hard to confirm. There is one minor flea bite chip on one rim and another cup with a stable hairline crack. All of the remaining cups only have light crazing and bubbling in the glaze.