17 3/8" including findings. Probably American. The spring ring and dog clip are fantastic in their scale, but the color is different than the chain so I imagine it was added later. It works, though. c. 1900, likely sold through a catalog like Montgomery Ward or Sears. Machined, 2 colors, lucky 7 nails in each horseshoe. Links are 3/8" wide. Gold Filled.