Silversmith ID

[madej]

Hi.
The assayer is Nikolai Lukich Dubrovin from Moscow but who is the silversmith?
Click on the image for better qualitty.
I will not make a better photo:(
Regards

[AG2012]

Hi,
Not well struck maker`s mark.Possibly Yakov Viberg. Виберг Яков Compare with this milk jug.
Regards

[madej]

Hi AG2012
Thanks for the answer. Unfortunately, the sign is badly visible, and we are guessed that it may be Yakov Viberg.
Regards