5. **What measures do postal services implement to prevent forgery and ensure the authenticity of stamps in circulation?
These questions cover a range of topics from history and philately to modern technological impacts on stamps.?
How did the introduction of adhesive postage stamps revolutionize the postal system?
What are some of the most valuable and rarest stamps ever issued, and what makes them so sought after by collectors?
How are commemorative stamps designed and selected for production, and what criteria are used to determine their themes?
What are the differences between definitive stamps and commemorative stamps, and how does each serve the postal system?
How has the role and design of stamps evolved with the advent of digital communication and electronic postal services?
What are the key factors that determine the value of a collectible stamp, and how can collectors assess them?
How has the design and production process of postage stamps evolved over time?
What are some of the most famous or rare stamps in philatelic history, and what makes them so significant?
