Literature:

Condition: Each has light undulation on the upper side. Directly attached to a mat, that is thought to be an original condition. [1](317) Has discoloration by scuff marks in places, a few tiny dot-shaped stain marks on the upper side, soiling at one point on the upper left, thin scratch on the lower right and minor creasing in the center of the left side. [2](327) Has a few scuff marks in the center part, pale tiny stain mark at one point in the center of left margin and creasing in the lower lower right and lower left corner. [3](338) Has minor scuff mark on the upper side. [4](354) Has scuff marks in the upper left and right corner, creasing in the center of the lower side, white dot-shaped dirt mark at one point in the center of the lower side.