What are some of the most famous or rare stamps in history, and what stories or events are associated with them?
What are the key features and elements typically found on a postage stamp?
How have postage stamp designs evolved over time, and what historical events or figures have been prominently featured?
What criteria or guidelines do postal services use to determine the value or denomination of a stamp?
How do collectors assess the rarity and value of stamps in philately, and what are some of the most valuable stamps ever issued?
What role have stamps played in cultural representation and national identity across different countries?
What are the different types of postage stamps, and how are they used in various postal systems?
How has stamp collecting, or philately, evolved over the years, and why do people find it appealing?
What are some of the most valuable or rare stamps in the world, and what factors contribute to their value?
How is the design and production process of stamps conducted, and what are the common themes featured on them?
