This is a 5 Dinar stamp from Iran (Persia), issued during the reign of Reza Shah Pahlavi in the 1930s. The design features a portrait of the Shah in an ornate frame on the right, with a detailed depiction of Golestan Palace in Tehran in the center, framed by intricate Persian ornamental patterns. Printed in red and green, this stamp belongs to a series showcasing Persian landmarks and royal imagery. Used examples like this one, with legible cancellations, are valued by collectors for their historical and cultural significance, as they reflect Iran’s modernization period under the Pahlavi dynasty.