I received this reply years ago from Denmark after I had send a letter after Princess Josephine broke her arm in a horse riding accident. I either never wrote a blog post or it never got transferred when I moved my replies from GertsRoyals.Blogspot.com to this site.
This card is written on the Crown Prince Couple's old stationary that they used at the time.
The card says:
TRH The Crown Prince & Princess's CourtAmalienborg Palace
Their Royal Highnesses The Crown Prince and Crown Princess
have asked me to thank you for your kind letter.
Chief of the Court of
Their Royal Highnesses The Crown Prince and Crown Princess of Denmark