Help to find out something about the author J. Berg

[oleg-vitebsk]

Good time of day! The situation is such, asked me to learn something about the author of this work.
Вложение 621591

Below the signature, such as J. Berg
Вложение 621601

Although it is clear that work so-so .... shirpotrebovskaya. Made in haste, for no expensive sales. But it is not talentless.

This work was taken from Germany in 1945. It seems not from the gallery, and most likely, from some private homes. The work on ceramic tile. Here's her turn.
Вложение 621611

If anyone can suggest anything about the author or the whole of the work and its possible values (which is not likely ...), not be bothered to, cherkanite couple of lines.
Thanks in advance.