Hall marked 1881 Birmingham, and what appears to be R&M, the makers mark of William Robinson and Arthur George McKewan of Hockley street, registered between 1880 - 1892. There is a tulip design in the centre representing love and blessings, with a space for a photo in the back, perhaps meaning it was a sweetheart or mourning/memorial gift. 4 grams in weight and there is a 5 pence piece in one of the photos to show scale. Take a look at my other listings for sale, I've lots of collectables vintage, retro and antiques. Including tools, toys, games, furniture, clothing and memorabilia. I can do good discounts on multiple purchases and combined postage