To provide seal enabling writing of names of persons or notes while avoiding direct writing on an important picture or a book, and enabling erasure of the written letters later when necessary.

Super-fine irregularities are applied onto the surface of a transparent or translucent material like acetate film faintly colored all over the face or part of it to enable writing of letters with a pencil or a ball-point pen. A weak adhesive is coated on the rear face of the seal. Thus processed seal is cut into a form 3 provided with a balloon on any one of the four directions of the seal. By optionally writing letters on the balloon type translucent seal 3 and sticking on a picture or a book, the seal can be freely stripped and stuck again, since the seal is coated with the weak adhesive. Since there is a balloon part, the blank space part of the picture or the like can be utilized.