The rise of foreign influence in Iran and the weakness and corruption of the country's rulers led early in the 20th century to the development a nationalist movement that demanded the establishment of a stitutional government. In 1906 the reigning shah, Mazaffar Din, was forced by popular demand to convene the first Majlis, or ional assembly, which drew up a liberal constitution. His son and cessor, Muhammad Ali, attempted to destroy the constitutional ement by force, but was defeated and deposed; his 12-year-old was placed on the throne as Ahmad Shah, and a regency was set In 1911 the American financier William Morgan Shuster arrived Iran at the invitation of the Majlis and was given full power to rganize the national finances. His reforms were, however, strated by the hostility of Russia; Shuster was dismissed, and sian power subsequently became dominant in Iran.

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Q&A:

For example, all 12 stamps shown at www.farsinet.com/tambr/ahmadshah1.html are worth couple of dollars. But if they were mint condition and new, they could be worth $20-$30.

A complete set such as the one shown above (in this page) is worth about $20. If they were all mint condition and new, could be worth $100. If they were first day special marked set, maybe more.

Hope it helps. You can also check eBay for other Persian stamps on sale to get some idea. - Nader