Postal services use seals to authenticate mail, indicating the sender’s location, date and official approval. These seals often feature logos, emblems and cancellation marks to track and validate mail delivery.
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Postal seals ensure mail authenticity, preventing tampering and ensuring secure dispatch. They typically include the postal service logo, date, city name and cancellation marks. Some stamps feature national symbols or famous personalities. Studying postal seals helps trace communication patterns, historical events and official verification methods. Even today, postal offices worldwide use seals to validate postage, track shipments and establish proof of mailing.