I think that it is Swedish.
Could you describe the marks. Or try a better picture.
The stripe zig zag is called "oldermands ranke" when they controlled the silver they took a sample before stamping the silver.
The silver smith had given his mark but before the official mark was giver they took this sample.
The compaired the sample with a sample that they knew.
13,5 lod which was the official containing 13,5 of of 16,0 (16,0 pure silver)
12,0 etc down to 11,0