What is the significance of postmarking on stamps, and how does it affect their value and collectibility for philatelists?
How do countries decide on the themes or subjects depicted on their postal stamps, and what processes are involved in their design and approval?
What are some rare or historically significant stamps, and what makes them valuable to collectors?
How has the introduction of digital communication affected the production and usage of postage stamps in recent years?
What are the primary differences between definitive and commemorative stamps, and how do their uses and designs typically vary?
What is the process for creating and issuing a new postage stamp, and who is typically involved in deciding the themes and designs?
How do stamps reflect cultural and historical events, and can you provide examples of stamps issued to commemorate specific milestones or figures?
What role do stamps play in the world of philately, and how do collectors typically assess the value of a stamp?
How has the design and theme of postage stamps evolved over the years, and what are some iconic examples from different countries?
What are the most valuable or rarest postage stamps ever sold, and what makes them so special?
