Fire insurance marks were metal plaques marked with the emblem of the insurance company which were affixed to the front of insured buildings as a guide to the insurance company's fire brigade.

These identification marks were used in the eighteenth and nineteenth century in the days before municipal fire services were formed.

SIZE = 235 mm tall by 205 mm wide at base

The UK marks are called 'Fire insurance plaques'.

The first to use the mark was the Sun Fire Office which was established in 1710.

British fire marks

For most of the 18th century, each insurance company maintained its own fire brigade, which extinguished fires in those buildings insured by the company and, in return for a fee to be paid later, in buildings insured by other companies.

By 1825, fire marks served more as advertisements than as useful identifying marks; some insurance companies no longer issued fire marks, and those that did sometimes left them up after a policy had expired.

Successive combinations of fire brigades led to virtually the entire city of London being put under the protection of the London Fire Engine Establishment, which fought not only the fires of policy holders but those of nonsubscribers, the reason being that fires in uninsured buildings could rapidly spread to insured buildings.