I'm guessing that these were converted from screw back findings because of the way the posts are attached, the backs look new and I got another pair at the same time, currently in another listing that look to have been done by the same maker and are screw backs. Weight of the pair is 11.3 grams. The item "Vintage Zuni Silver Turquoise Inlay Earrings Long Pierced Naja Design Dangle" is in sale since Monday, August 27, 2018. This item is in the category "Jewelry & Watches\Ethnic, Regional & Tribal\Native American\Earrings". The seller is "jewelryjoy" and is located in Las Cruces, 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, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Israel, Mexico, New Zealand, Philippines, Singapore, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Bahamas.