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An indicator for mail sent on government business.
Also known as: On her majesty's service marking, Government mail indicator, Official paid marking
An official mail marking identifies an item sent on government business, carried under a franking arrangement rather than by ordinary purchased postage.
Identifies mail sent on official government business under a franking arrangement.
Contexts: History
Belongs to a family of privileged franks that also covers parliamentary, military and prisoner-of-war mail, each carrying its own indicator.
Contexts: History
A printed rectangle of block letters identifying the department and the official service.