A striking provisional issue from Luxembourg, this surcharge stamp features the classic engraved portrait of Grand Duchess Marie-Adélaïde from the early 20th-century definitive series. Originally denominated 62½ centimes, it was surcharged in red to 75 centimes to meet revised postal rates. The bold red “75” stands out sharply against the deep blue-green frame, showcasing the ornate Art Nouveau-influenced border typical of Luxembourg issues of the era. Collectors value this stamp for its clean typography, strong impression, and its role in the country’s postal transition period. An excellent piece for specialists in European surcharges and Luxembourg monarchy issues.