What are the different types of postage stamps, and how do they vary in terms of usage and value?
What is the process for designing and issuing a new stamp, and who typically decides which themes or subjects are portrayed?
How do specialty stamps (such as commemorative or thematic stamps) differ from regular postage stamps in terms of design and production?
What are some of the most famous and valuable stamps in the world, and what makes them so sought after?
How do collectors determine the value and rarity of a particular stamp?
What are the historical origins of postage stamps, and how have they evolved over time?
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What role do commemorative stamps play in celebrating significant events or figures, and how do they differ from regular issue stamps?
How has the design and production of postage stamps evolved with the advent of digital technology and changing postal needs?
What are some of the most valuable stamps in the world, and what factors contribute to their high value?