To apply a new stamp over an existing one.
To cover or modify printed information with stamping.
To mark something again for clarity or correction.
To impress a design onto an already stamped item.
To validate old documents with updated stamps/markings.
A postage stamp applied over another for value change.
An official mark added to a document or item.
A cancellation marking on an envelope or package.
An additional postal charge indicated by the stamp.