Kensington Palace fine bone china mug cup Royal cypher

Beautiful fine bone china mug from Kensington palace Looks to be incredibly rare and is nowhere online, excellent condition Crown Royal Duchy, Fine Bone China made in England By the Guild of English Master Potters Kensington Palace was the home of Diana the Former Princess of Wales and one of the homes of Prince William and Catherine Princess of Wales, location for the wedding announcement of the Duke and Duchess of Sussex Brown design of the Palace on exterior and cypher on other side Cypher of the palace on interior Home of Kate Middleton, Catherine Princess of Wales Gold accent on handle and around the top GWR makes me think this may be from George V or George VI, collective reigns from 1910-1952