Design cutlery from the 1990s : Folding cutlery - a rare vintage find. The original set was manufactured by an Amsterdam-based silversmith Wouter van Baalen. Originally produced in limited quantities, the Fold Cutlery was later put into production by the renowned manufacturer Keltum under the name B-Stack. Marked Keltum 18-10. Approx 20 cm long.Normal signs of use