Hi, I would appreciate any help anyone can offer in identifying the makers mark on this silver George I mug. Please let me know if you require any further images. Many thanks https://i.ibb.co/55KQp67/Hallmark2.jpg https://i.ibb.co/jZFCYxb/Image-of-mug.jpg https://i.ibb.co/DbxTCtP/IMG-1338.jpg