The metal vase with the "sskk" mark was most likely made by the Sheffield Silversmiths, Kelham Island Industrial Museum in England. Sheffield was historically known for its silver and metalwork industry, and the "sskk" mark could be their maker's mark or a design stamp.
SSKK refers to a specific mark used by the silversmiths of the Silver Smiths Guild of Korea, indicating the piece is made from sterling silver. The stick man, often depicted in the design of the flatware, symbolizes the craftsmanship and artistry involved in creating the piece. These elements together highlight the cultural significance and quality of Korean silverware.