Hello blueash
In yours question to «925-1000» forum you mention that objects basic material is «seemingly on a copper base». In yours pictures lower right corner cooper is visible. Have you already made a magnetic proof? Iron sheet — I explicit don’t say “steel”! — are often used for this kind of tin products. Today they were lacquered. In past time it was usual to have a first galvanic layer in cooper — that’s maybe visible in object’s picture, its first galvanic layer? Gold coloured top layer isn’t maybe a galvanic but a lacquered one? Please let «925-1000» forum know result of magnetic proof.
Shown marks seem to me be «Pseudo Mark’s».
First mark should maybe suggest a Gorham date symbol?
Second mark should maybe suggest Gorham mark?
Third one should maybe suggest a Town Mark e.g. Minsk or Warsaw?
Fourth mark should maybe suggest an Assayer’s mark?
Numeral 2565 is maybe producer’s model number of series of similar tin’s?
In American form scratched numerals L3203, L4183, L6753 could maybe numerals of several inventories?
I guess that tin’s contents were a product in gift box - beloved by East European emigrants in America.
I've many doubts to state - as you: 19th century
For to get sounded information look detailed to:
http://www.925-1000.com/Gorham_Date_Code.html
http://www.925-1000.com/Frussia.html
Kind regards silverport