Cachet and stamp depict oil pipeline and drilling derricks.
- Manufacturer Thomas De La Rue & Company
- Subject Petroleum industry and trade, Postage stamps, Egypt, United Arab Republic, Postmarks, Commemorative postage stamps, Science on postage stamps, Congresses and conventions, Cachets (Philately), First day covers (Philately), Petroleum engineering, League of Arab States, 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.