Royal response from Her Royal Highness The Grand Duchess of Luxembourg on the occasion of her 66th birthday.
Born Maria Teresa on 22nd March 1956 in Marianao, Havana, Cuba to José Antonio Mestre y Álvarez and María Teresa Batista y Falla de Mestre.
The reply is in the form of a card in Luxembourgish and thanks me for my birthday wishes to Her Royal Highness, also included is a family photo of The Grand Ducal Family.
Picture

Card

Translation
The Grand Duchess would like to thank you very much for your birthday wishes. This kind attention delighted Her Royal Highness immensely.