Help I.D. Imperial Russian hallmark on sauce serving spoon

Hi all, wondering if anyone can help i.d. the hallmarks on my Imperial Russian sauce serving spoon. It’s 52 grams and simply but beautifully crafted. I can make out Moscow as the city mark, and “84” (87.5%) on the silver content, but the assay mark is very worn and not sure on the maker. Ivan Saltykov? Nicolay Strulev? Thanks for your thoughts.