What did the first stamps of Iran look like?

Stamps have a long history, dating back to the mid-19th century when the first adhesive postage stamp, the Penny Black, was issued in the United Kingdom in 1840. This revolutionary invention allowed for the prepayment of postage, simplifying the postal system and making it more accessible to the general public. The Penny Black was quickly followed by stamps in other countries, leading to the widespread adoption of this new method of postal payment.