How do specialty stamps (such as commemorative or thematic stamps) differ from regular postage stamps in terms of design and production?
What is the process for designing and issuing a new stamp, and who typically decides which themes or subjects are portrayed?
What are the different types of postage stamps, and how do they vary in terms of usage and value?
How has the design and usage of stamps evolved since their inception in the 19th century?
What factors determine the rarity and collectible value of a stamp?
How do countries use stamps to commemorate significant events, people, or cultural aspects, and can you provide some notable examples?
What role do stamp catalogs and societies play in the hobby of philately (stamp collecting)?
What are the key factors that determine the value of a collectible stamp, and how can collectors identify valuable stamps?
How has the design and purpose of postage stamps evolved since their introduction in the 19th century?
What are some of the most famous or rarest stamps in history, and what stories or historical events do they represent?
