This is an antique copper powder flask, most likely used by the U.S. military or a military group. It probably dates from the late 1800's. Both sides have a fancy raised plume design. No maker name or markings are present. There are two ringlets for carrying, on which is tied some very old string with soft tassle ends. The dimensions are 8 x 3 1/4 inches. Its condition is very good for its age, with only a few minor dings, and light surface wear. The thumb lever seems to operate fine. This is a splendid flask for the true collector.