Silver or silverplate?

Recently I bought the milk jug on the flea market. The seller said it’s silverplated.
But I checked the scratches and they are rather deep: there is a white metal inside. It can be nickel but the piece is to heavy for it.
Marks are unknown to me.
Can “14” be for German silver standard before 1886?
Other two marks are uncommon to me. Anchor or thistle? And walking bird seems to me.

Thanks in advance.

may be photo of the jug will help