Issued by Luxembourg in 1970, this vibrant 3F commemorative celebrates the centenary of the Luxembourg Bishopric (Évêché 1870–1970). The design beautifully mimics medieval stained-glass windows, depicting crowned ecclesiastical and royal figures holding a cathedral model and regalia, symbolizing church heritage and national history. Rich jewel tones and bold black leading lines create a striking, cathedral-window effect rarely seen in standard issues. Printed by Courvoisier S.A., the stamp reflects high-quality European craftsmanship and sharp color separation. A standout thematic piece for collectors of religion, art, and stained-glass subjects. Attractive addition to any Luxembourg or church-history collection.