This elegant 6F stamp from Luxembourg, issued in 1964, celebrates the country’s rich Baroque artistic heritage. It features a detailed engraved depiction of St. Gregory, framed within ornate architectural motifs inspired by Baroque altarpieces. The deep reddish-brown intaglio printing highlights the craftsmanship typical of mid-20th-century Luxembourg definitives and commemoratives. Designed by A. Bočskor and printed by the Austrian State Printer, the stamp is admired for its fine linework and historical artistic theme. A desirable piece for collectors of religious art, European culture, and engraved philately.