Instructions
Flip the item over. Look for a mark on the base of a tea cup or the bottom of a plate. Check both the bottom and back of a china figurine.
Interpret the marking. Plates marked "Nippon" or "Japan" predate American occupation. The former signifies an item made no later than the 1920s and the latter typifies china made just before the war. The word "Occupied" always precedes "Japan" for items dated 1945 through 1952. The mark appears with a T circled by an O.
Inspect more elaborate hallmarks closely. Sometimes in lieu of the Occupied Japan marking, an individual maker incorporated the verbiage within their company or tableware line logo. Noritake imprinted the words without symbols underneath their logo. Maker's marks for lines such as Lenwile, Sango and Sagi china incorporated "Occupied Japan" within the hallmark's design.