Beautiful and well made pin. I found a very similar example in two different publications which are included in the photos. The artist is Merle Edaakie in one book and Mary Kallestewa in the other. 1 7/8" x 1 1/2", attribution is based on my own research. Notice the similarities in design, especially when you look at the silver work and the inlay in the tail.There are some trader or pawn codes scratched in the back. The item "Zuni Knifewing Pin Circa 1930 Possibly by Merle Edaakie or Mary Kallestewa Vinta" is in sale since Friday, June 16, 2017. This item is in the category "Jewelry & Watches\Ethnic, Regional & Tribal\Native American\Pins, Brooches". The seller is "willi_colla" 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, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Russian federation, Israel, Mexico, New Zealand, Philippines, Singapore, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica.