Dating nippon porcelain
Pieces pre-dating 1911 will not have the “Noritake” mark.
Check for telltale signs that the piece may be a reproduction.
Check the quality of the painting; the pattern should have meticulous attention to detail, and brushstrokes should be uniform — reproductions usually have sloppy, uneven painting.
Fakes also sometimes have a paper "Made in China" label, which unscrupulous dealers often remove.
In addition to the Nippon mark, pieces made for the U. market from 1911 to 1921 often have the letter “M” in a wreath.
Pieces made for the British market are often stamped with an “X” with a vertical bar through the center, while pieces for the domestic Japanese market were usually Oriental in design and back stamped with a “Yajirobe,” a Japanese balancing toy resembling an upside-down seesaw. Morimura began stamping its import pieces with the name “Noritake” — the suburb outside Tokyo where the factory was headquartered — in 1911.
The mark may tell you where your piece was made and if you know the history of understanding pottery marks, then the mark can help you date your piece too.