I had this boxed set of Silver Plated napkin rings made by Walker and Hall of Sheffield, I expect they are somewhere around 1910ish but that is a complete guess, they may be older. They are a family piece. I use them at Christmas. The box was looking a bit tatty and as I had just refurbished a couple of Singer Featherweight Sewing machine boxes, had the idea of tidying this box up as well.
Here is the before
Used the same technique using a Sharpie black pen to colour in all the dings and scratches. Looking better already.
Then two coats of black shoe polish being careful not to get it on the gold lines. Drying and polishing each layer.