Post offices use rubber and metal seals for authentication. Rubber stamps mark dates and locations, while metal embossing seals validate legal documents. These ensure secure communication, prevent tampering and maintain historical records of postal transactions.
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A visit to a post office reveals different seals, including rubber stamps for date and location markings and metal embossing seals for official authentication. Postal seals feature government emblems, regional codes and cancellation marks, ensuring secure mail handling. These seals prevent fraud, verify postal authenticity and preserve historical records of communication. Understanding their significance helps in recognizing how postal services maintain order, security and credibility in the mailing system through official validation methods.