Signature of Queen Elizabeth The Queen Mother, which features her name (Elizabeth), followed by the letter R for Regina (Queen)
This  is a retouched picture, which means that it has been digitally altered from its original version. Modifications: SVG vectorization.  Modifications made by Tipinen. The original can be found here: https://www.pinterest.com/pin/queen-elizabeth-the-queen-mother-1960-christmas-card-signed--189784571771920725/.
Queen Elizabeth, The Queen Mother