Prince Charles sent out a card with a throwback photo of himself with his late father, Prince Philip, to thank fans for their support after the Duke of Edinburgh passed away at 99 years old on April 9.
One Instagram user received a thank you note from Charles, which showed the 72-year-old riding with his father in a small motorboat at Cowes, Isle of Wright.
"The Prince of Wales thanks you so much for your very kind message of sympathy," the note read. "His Royal Highness has been enormously touched by the many generous messages that have been received in recent days; they have provided great comfort at this very sad time."
It concluded, "The Prince of Wales sends you his warmest thanks and best wishes."
Shortly after the royal family announced the news about Philip via social media, Charles had nothing but kind words to say about his dad.
"I particularly wanted to say that my father, for I suppose the last 70 years, has given the most remarkable, devoted service to The Queen, to my family and to the country, but also to the whole of the Commonwealth," he began.
"As you can imagine, my family and I miss my father enormously. He was a much loved and appreciated figure and apart from anything else, I can imagine, he would be so deeply touched by the number of other people here and elsewhere around the world and the Commonwealth, who also I think, share our loss and our sorrow," Charles continued.
He concluded, "My dear Papa was a very special person who I think above all else would have been amazed by the reaction and the touching things that have been said about him and from that point of view we are, my family, deeply grateful for all that. It will sustain us in this particular loss and at this particularly sad time. Thank you."
Charles attended Prince Philip's April 17 funeral alongside his wife, Camilla, Duchess of Cornwall, and sons Prince William and Prince Harry.