Early 1800s. Made entirely of natural materials and probably pre-contact. 2 7/8" diameter. Coil work, lipped domed form. The outer edge (lip) of red dyed plant fiber thread. The balance of porcupine quill covered coils. Used on hair pipe breastplates, singly or in pairs and rarely, three. Most often, they were made of shell from the Pacific, acquired through trade. Porcupine quill examples are rarer. The American porcupine in adaptations is found throughout the continent from Alaska to Mexico and coast to coast. This example is sound and complete in well used condition.