The front of the envelope features two lovely stamps of Grand Duke Henri and Grand Duchess Maria Teresa. The stamp was released in 2015, to mark the 15th Anniversary of Grand Duke Henri's enthronement.
The back of the envelope features a blue crown.
Inside is a flat card with a typed message. This is fairly typical of the Luxembourg royals.
The card reads:
His Royal Highness, The Hereditary Grand Duke, greatly appreciates your kind wishes on his birthday and sincerely thanks you.
Luxembourg, November 2019
