Vintage Fred Harvey era, Native American copper bracelets. 
 
Navajo Rug design link bracelet: approx 19,5 cm - 7 1/2" long
Thunderbird link bracelet: approx 20cm - 7 3/4" long
Thunderbird cuff with handmade stampwork: 2,2 cm - 7/8" wide
18 cm - 7 1/8" around, as it sits, with lots of play for resizing