Make It Yourself Link Belt Kit from the Boy Scouts of America. It’s not dated, but it’s probably from the late 1950s to the mid 1960s. All components are in the box. The leather is still surprisingly supple. The metal components are likely brass-they shed some green flakes when I took the pictures. Probably clean right up with a damp cloth. Feel free to email with questions. I do combine shipping on multiple items. Have a great day!