Re the King's badge. Leon, it is always nice to see something new. In 30 odd years of dealing in militaria I have seen dozens of those King's badges, and their WW1 equivalent, the War Service Badge (sometimes incorrectly called 'the Wound Badge', but I have never seen a certificate like the one you illustrate. I'm guessing that whereas most of the badges have survived, 95% of the letters have been lost over the years, so I am glad you still have your grandfather's.