This reply certainly came a lot quicker than Prince William's birthday reply this year, which was an unheard of 4 months, which is the longest response time I've received so far. Clarence House had been backed up most of the summer, with the huge number of correspondences for Princess Charlotte's birth and then taking time off for the summer holiday.
This reply was mailed on October 30th, 1.5 months after Prince Harry's birthday. Last year's reply is postmarked October 3rd, so quite a bit quicker, but the delay in this year's response is understandable given Clarence House's busy summer and still falls into the normal response time.
The reply on the back of the card is your standard birthday message. The message reads:
Prince Harry was touched you took the trouble to write as you did on the occasion of his 31st birthday.Back to Replies - Main Page
It really was most thoughtful of you and His Royal Highness sends you his warmest thanks and best wishes.