This Luxembourg 50 centimes stamp features a finely engraved portrait of Grand Duchess Marie-Adélaïde, the first reigning Grand Duchess of Luxembourg. Printed in a striking red-orange shade, the design is enhanced by a decorative crown motif above the portrait. The bold black overprint “Officiel” designates its use strictly for official government correspondence. Issued around 1914, this stamp belongs to the official service issues of Luxembourg, which are highly sought after by collectors due to their restricted usage and elegant typography. A well-preserved example of this overprinted issue adds strong historical and philatelic value to any specialized Luxembourg collection.