Pretty sure you will be able to see what I'm referring to in the pictures. Like most older pieces, it is not stamped or hallmarked for silver content. It is sterling, or a slightly lower, grade of silver.
Short history of the "Whirling Log" pattern: the symbol is similar to the Nazi Swastika and that is the reason the Native American artisans stopped using it. For the Native Americans the symbol is associated with healing ceremonies. The pieces, even here in the Southwestern US, can be hard to find. An infant/baby bracelet - I've never seen one before. The item "Vintage Navajo Whirling Log Stamped Sterling Silver Cuff Baby Infant Bracelet" is in sale since Thursday, August 27, 2020. This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Vintage Ethnic/Regional/Tribal\Native American (pre-1935)". The seller is "trijunque" and is located in Albuquerque, New Mexico.This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay, Philippines, Cayman islands.