Early 1900's Scottish Sgian Dubh

From Wikipedia: "The sgian-dubh (/ˌskiːən ˈduː/skean-dhu;Scottish Gaelic pronunciation: [s̪kʲɪnˈt̪uh]) is a small, singled-edged knife (Gaelic sgian) worn as part of traditional Scottish Highland dress along with the kilt. Originally used for eating and preparing fruit, meat, and cutting bread and cheese - as well as serving for other more general day to day uses such as cutting material and protection, It is now worn as part of traditional Scottish dress tucked into the top of the kilt hose with only the upper portion of the hilt visible. The sgian-dubh is normally worn on the right leg, but can also be worn on the left, depending on whether the wearer is right or left-handed."