Fish cutlery in a box

A box of 6 silver metal fish cutlery. The sleeves are made of ivoirine, a synthetic material that mimics ivory. The knives are finely engraved, the forks being simpler. 2 forks have a looser mitre (part that connects the handle to the fork). The silver part has been cleaned but there are still traces of oxidation on and near the mitres. I will not touch it any more, for fear of damaging the handle in ivoirine. This patinated part thus brings a transition between the silver metal of the blade and the ivory color of the handle. Fork: 18cmx2.5cm. Knife: 20cmx2cm. The cardboard box, in good general condition, has worn corners. The interior, trimmed with white satin, shows some wear stains. It is monogrammed j.clément excideuil in golden letters.