What did the first stamps of Iran look like?

In addition to collecting stamps for their aesthetic appeal and historical significance, many people also collect stamps as an investment. Rare and valuable stamps can fetch high prices at auctions and sales, making philately a potentially lucrative hobby. Some of the most valuable stamps in the world include the Treskilling Yellow, the British Guiana 1c Magenta, and the Inverted Jenny, all of which have sold for millions of dollars.