In short, I have a tray that has been gifted to me that adorns hallmarks that I am unable to conclusively identify. It measures approximately 15 inches at its widest and appears to depict the classic scene of Persephone and Hades of Greek mythology. I have had the piece tested for silver content and the results were above .925 . I have linked a picture here that, hopefully, has quality enough for all to see. All help is greatly appreciated and I’m happy to be a new member of such a wonderful community.