TLS signed 'Charles,' one page, 5.25 x 7.5, Buckingham Palace letterhead, March 16, 1981. Brief letter of thanks to David. Charles adds a handwritten note after text 'Please forgive a typed letter written in the car. I can't cope any longer! Love to Rene.' In fine condition. COA John Reznikoff/PSA/DNA and RRAuction COA.