What are some of the most famous or valuable stamps in the world, and what makes them unique?
How do collectors categorize and evaluate the value of stamps, and what factors contribute to a stamp's rarity and worth?
What are the origins and history of postal stamps, and how have they evolved over time?
How has the role and significance of stamps changed with the advent of digital communication and electronic mailing systems?
What security features are included in modern postage stamps to prevent counterfeiting?
How do differences in stamp designs and features reflect a country's cultural or historical heritage?
What are some rare and valuable stamps that collectors seek, and why are they considered so valuable?
How did the introduction of postage stamps revolutionize the postal system?
What role do philatelic societies and clubs play in the community of stamp collectors, and what resources do they offer to enthusiasts?
How do postal systems determine the face value of stamps, and what factors influence changes in postage rates?
