This 1961 commemorative set from Turkey celebrates the CENTO (Central Treaty Organization) conference held in Ankara. Each stamp highlights themes of modernization and international cooperation among member nations (Turkey, Iran, Pakistan, and the UK).

• 30 Kurus (Violet): Depicts a sleek modern train and telecommunications tower, symbolizing technological progress and regional connectivity.

• 40 Kurus (Green): Shows tractors, power lines, and a communication symbol—representing agricultural development, energy, and industrial coordination.

• 75 Kurus (Blue): Features the Turkish Parliament Building and the CENTO emblem, marking Ankara as host city and Turkey’s leading role in the alliance.

Printed by APA Offset Basımevi, Istanbul, this set captures the early 1960s optimism toward progress through international cooperation.