This official First Day Cover from Slovenia, issued in 2000, celebrates the World Radio Team Championship (WRTC 2000)—a premier international event in amateur radio. The cover features a striking design showing the Earth with expanding radio-wave rings, symbolizing global communication. The 20-tolar commemorative stamp shows an operator at a radio console against a world map, capturing the spirit of worldwide connectivity. It bears the special Ljubljana first-day cancellation dated 9.5.2000, with a matching radio-wave motif that complements the envelope artwork. A clean, well-preserved philatelic item ideal for collectors of communications, technology, and Slovenian postal history.