Cachet and stamp depict oil pipeline and drilling derricks.
- Manufacturer Thomas De La Rue & Company
- Subject Postmarks, Commemorative postage stamps, First day covers (Philately), Congresses and conventions, Postage stamps, United Arab Republic, Petroleum engineering, League of Arab States, Egypt, Cachets (Philately), Science on postage stamps, Petroleum industry and trade, and Arab Petroleum Congress
Depicts oil derrick, pipeline, and emblem of the 6th Annual Arab Petroleum Congress held in Baghdad, Iraq in March 1967.
Stamp depicts Nobel Prize medal and a dove with an olive branch in its mouth.
Depicts Albert Einstein with his formula for special relativity, along with a rocket. Stamp was part of a series that also included Newton, Copernicus, and Galileo.