Housewife of cutlery with bamboo sleeves 30 pieces

Housewife of cutlery "bamboo handle" 30 pieces (6 large knives 5 +1 different model, 6 large forks, 6 large spoons, 6 small spoons, 6 dessert forks) They are all made of steel and I think they have never been used given their condition. They are marked justinus-stainless solingen germany with the exception of small spoons which are marked stainless steel and dessert forks or dessert forks which are not marked at all. Note a small fork with traces of discoloration (see photo) and the different knife has some small traces of discoloration. Dimension of a knife: 20.50 cm (the different one measures 22cm).