The number on the bottom (if it is etched by hand) represents a repair, if it is stamped into the metal represents the pattern number for this set. This does look to be silver plate. There is only the one photo from above. I would like for you to add another picture of the front and of the marks on the bottom. You can do that by using the Add Files feature on your screen. I can finish my answer once I get some better views of this set.