Japanese Bowl Large Hand painted vintage Blue/White Chinoiserie 6904 For Sale

Vintage Hand Painted Blue White Japanese Porcelain Bowl 6904 Floral 10” across top snd 5" tall. There is some wear on the bottom rim. There is a couple of dark spots inside bowl. Im not sure if they would come off with proper cleaning or not. I am nit familiar with handpainted Porcelain so i was afraid to try a magic eraser or barkeepers friend and do real damage for spots barely noticeable. There is also a rough spot on outside of bowl. Bowl us marked 6904 on bottom. Please see pictures.