What are the key factors that determine the value of a collectible stamp, and how can collectors identify valuable stamps?
What role do stamp catalogs and societies play in the hobby of philately (stamp collecting)?
How do countries use stamps to commemorate significant events, people, or cultural aspects, and can you provide some notable examples?
What factors determine the rarity and collectible value of a stamp?
How has the design and usage of stamps evolved since their inception in the 19th century?
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?
