The central image area, composition, or focal point; the area inside the margins/plate marks.

Areas bordering the central image, outside the plate marks, or the perimeter area.

The farthest edge of the object.

The reverse/back of the object.

An existing condition which generally does not involve risk of loss.

Noticeable damage, increasing in severity and/or size; should be monitored or corrected by a conservator.

Distinct, recognizable damage; the stability of the work is questionable and risk is a factor. Requires the attention of a conservator.

Advanced and severe damage; work is insecure and at great risk.