© RTL Grafik/Maison du Grand-Duc
Luxembourg's future Grand Duke Guillaume will officially adopt a new monogram on 3 October, the Grand Ducal Court announced on Tuesday.
The design features two mirrored capital 'G' letters topped with a crown and will become the formal emblem of future Grand Duke Guillaume, appearing on uniforms across the Army, Police, Prison Service, Customs, and the Grand Ducal Fire and Rescue Corps (CGDIS). The monogram reflects a long-standing royal tradition while introducing a modern aesthetic suited to its use on national insignia.
Created by Luxembourg designer Yolande Kaiser, the emblem is based on italic handwriting and shaped according to the golden ratio. "The Prince was keen for the G to be recognisable", Kaiser explained.
To enhance this, decorative curves were added within the letter, creating a lighter, more refined effect. The crown, redesigned for the occasion, thus sits perfectly aligned with the outer edges of the monogram, reinforcing the geometric harmony of the piece.
The project was informed by a historical analysis of previous monograms, including those of Grand Dukes Henri and Jean, and Grand Duchesses Charlotte and Marie-Adélaïde.
Historically, monograms varied depending on the symmetry of a ruler's initials. Symmetrical letters, such as the 'H' in Grand Duke Henri's name, allowed for a clean, balanced design. Others, like Grand Duchess Charlotte's 'C' and lowercase 'h', required graphic adaptations to maintain visual harmony.
In Guillaume's case, although 'G' is not a naturally symmetrical letter, the decision was made to create a mirrored design.
© Screenshot / Maison du Grand-Duc
In keeping with tradition, the monogram is accompanied by a full graphic charter and may only be reproduced with prior authorisation from the Grand Ducal Court.
On 3 October, Hereditary Grand Duke Guillaume will pfficially take over from his father Grand Duke Henri.
