This 18-cent commemorative stamp from Australia marks the 100th anniversary of the first telephone transmission, celebrating Alexander Graham Bell’s landmark technological breakthrough. Issued in 1976, the design features Bell using an early telephone apparatus, symbolizing the dawn of modern communication. The artwork combines clean typography with a historical illustration, making it a sought-after thematic item for collectors of technology, communication history, and Australian commemoratives. A fine example from Australia’s mid-1970s innovation-themed issues.