This VTG previously owned Noritake Apollo US Design is made in Japan and has a Patent # 76838.  This is a set of 8 Bread and Butter Plate approx 6.25".  According to replacement.com they were discontinued circa 1921.  All items show light visible signs of  age/wear.  Made of porcelain and should be handwashed.  Some plates show the Patent # 76838 and others show patent Applied For.