This Iranian stamp features a portrait of Reza Shah Pahlavi, the founder of the Pahlavi dynasty, in an ornate green frame. To the left, printed in blue, is a detailed depiction of a mosque, showcasing Persian Islamic architecture. Issued in the early 20th century, these stamps combined royal imagery with national landmarks, reflecting both modern statehood and cultural heritage. The denomination is 50 dinars, indicated at the lower right. This issue belongs to the definitive series of Reza Shah, widely collected for its historical and artistic value.