Garden City Pottery operated out of San Jose, California from 1902 to 1987. Its golden age was in the 1930s and 40s and is the period from which these ramekins date. The orange glaze was discontinued in 1944 due to the unavailability of the uranium oxide used to make the glaze. Put a Geiger counter up to it and it will register radioactivity (but don't worry, it's safe)!
 
Price is per ramekin.