Christmas Greeting Card Personally Signed In The Hands Of Prince Charles And Lady Diana With Family Image. August 2017 Certificate Of Authenticity. The item "Christmas Greeting Card Signed Prince Charles And Lady Di. A" is in sale since Tuesday, July 24, 2018.This item is in the category "Collectables\Autographs\Certified Original Autographs\Historical". The seller is "regal_stamps" and is located in MK10 1EF. This item can be shipped worldwide.