Issued by Indonesia in 1966, this definitive stamp features a side-profile portrait of President Sukarno, the founding leader of the Republic of Indonesia. The simple monochrome blue design reflects the transitional political period following Indonesia’s early independence years. Definitive issues of Sukarno remain historically significant as they represent the final phase of his presidency. The 30 sen denomination was intended for everyday postal use, making well-preserved examples desirable to thematic and political-history collectors. A classic Southeast Asian leadership definitive from the mid-20th century.