The assay master's mark looks like "A.T" using the Roman/Latin alphabet but it is of the Cyrillic alphabet and is "д.T" where the "д.T" equals "D.T". This is Dmitriì Ilbich Tverskoy (Dmitriì Ilbich Tverskoì) (Dimitry Ilyich Tverskoi). He was a St Petersburg Master and the pictorial mark on this spoon is likely the anchor, grapnel and mace intertwined mark of St Petersburg. There are extensive posts in our Forum relating to the variously spelt "Dimitry Ilyich Tverskoy". What I did not find on the Forum is reference to the maker mark that I am settling on as being "F.WST". I was convniced of that when I saw on line, silver from St Petersburg, dated 1846, "mastered" by "Tverskoy" and with a much less worn "F.WST" maker's mark. That mark was attributed to a "O.F.Wennestrom". Does the Forum know "O.F.Wennestrom"? Could it have been a family concern with an "F.WenneSTrom"?
There are very few online references to "O.F.Wennestrom" but this is a recent auction item attributed to him. A circular 5cm diameter box. The mark is not good but there is a ".WS". I assume this item would be much later in date than my spoon?
I note from online that around the Baltic Sea area there are other very closely stemmed surnames. Could there have been a corruption or in correct translation of the surname in the records?
Is the style of my spoon as you would expect for a mid 19th century Russian or Baltic region condiment spoon? It does not look much different from a "run of the mill" British spoon.
Fishless