Issued by the Republic of South Africa (RSA) in 1973, this 15-cent commemorative stamp celebrates World Telecommunications Day. Designed by Cliff Webb, the stamp features a striking map of the world in green set against a deep blue background, symbolizing global communication links. Red transmission lines radiate from South Africa, emphasizing the nation’s connection to international telecommunication networks. The concentric circles suggest the expanding reach of radio and satellite signals, marking the technological progress of the era.