Issued in 1967, this 6 Franc stamp features Echium lineare (Blue Viper’s Bugloss) set against the iconic Atomium structure in Brussels. The design beautifully combines botanical elegance with Belgium’s scientific and architectural achievement, symbolizing progress and harmony between nature and technology. The industrial skyline in the background further reflects the nation’s modern development era. A striking thematic issue appealing to both flora and architecture collectors. A fine addition to 1960s European commemoratives.