This is a beautiful sheet of 6 stamps, issued by Mozambique in 2010, depicting world electric power development. Featured on the stamps are the discovery of electricity, Greek philosopher Thales of Miletus, American inventor Thomas Edison & the invention of the light bulb, and President of the Republic of China Sun Yat-sen with his development of the Three Gorges Dam power station, among others. The sheet is Michel catalog #4172-7, and is Post Office fresh, mint never hinged, and F/VF.