Issued by Austria in 1979, this striking S2.50 stamp features a powerful visual of two matchsticks—one burnt, one igniting—symbolizing the importance of conserving energy. The message "Spart Energie!" (Save Energy!) appears boldly across a deep blue background. Designed by Otto Stefferl, the stamp is part of Austria’s environmental awareness campaign during the global energy crisis era. A bold and modernist design that appeals to topical collectors interested in ecology and energy themes.