This elegant 1965 semi-postal issue from Belgium depicts the renowned Maison Stoclet in Brussels, a masterpiece of early 20th-century architecture designed by Josef Hoffmann for financier Adolphe Stoclet. Celebrated as one of the finest examples of the Vienna Secession style, the house embodies a synthesis of art, architecture, and craftsmanship. The two stamps—3F+1F in blue-grey and 8F+4F in brown—show different architectural perspectives of the building’s geometric and ornamental façade. These stamps were issued to support cultural funds and highlight Belgium’s appreciation for architectural heritage.