They are small (8 cm long) but heavy (16 grams each) and show an impressive decoration on their handle.
Here are the spoons:

And close up pictures of their decoration:

My first question is about the possible use of such a set. Caviar spoons ? Only decorative ? I don't know. If somebody has a suggestion, I would appreciate it.
They are all hallmarked with a 13 mark which makes me believe that they could be from Germany or central Europe.
They also exhibit another mark which looks like an animal, but not clearly identified: it seems that it has two legs (not sure) and a tail like a bird, but it seems also that it has two ears like some mammals !? This mark is delineated by a rectangle outline with upper corners cut. Is it a maker's mark or a town mark ? I don't know. I was unable to find a fit with a town mark in my reference documentation.
Finally these spoons are also marked with a french import mark which represents a weevil within an ellipse. This mark was used in France between 1864 and 1893 for imported silver products.
Here are the marks for silver purity and for import in France:

and here are the 6 different marks for the town/maker:

Could somebody help in identifying the origin and age of these spoons ?
Thanks for your help.
Dinio