Please identify the necklace. Is it French?

[Anniexs]

I bought it in US few years ago. I guess it was French. Please help me to identify it. Is it starling siler 925? What does the letter G mean? What do the two picture steel seals mean? Who is the maker P. S. ? What year is it? Thanks a lot.

[Anniexs]

[AG2012]

Hi,
It was made in Poland after 1986 (Gdansk).
See here:
http://www.925-1000.com/Fpoland_marks_1.html

Regards