The earliest trade tacks were made of solid cast brass with brass square tapered shanks and where traded by the Hudson Bay Company, North West Trade Company and others. Dome top heads that measure aprox 5/16" to 11/32", depends on the way the head is turned when measuring. SEE ALL PHOTOS for measurements as well as description. These are early to mid 19th century and there are no two identical carbon copies, all average the same size and some have irregular edges. Feel free to ask any questions or the need for more photos.We provide description of items based on the observation, research or provided information and try to answer all questions to the best of our ability. SEE MY OTHER LISTINGS FOR MORE TACKS IN OTHER SIZES AND QUANTITIES. The item "100 OLD 5/16 19TH C SQUARE SHANK BRASS TACKS CROW KNIFE SHEATH TOMAHAWK HANDLE" is in sale since Wednesday, May 2, 2018. This item is in the category "Collectibles\Cultures & Ethnicities\Native American\ US\1800-1934\Other Nat. The seller is "theresasplace" and is located in Midland, Michigan. 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, China, Sweden, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Israel, Mexico, New Zealand, Philippines, Singapore, Norway, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, Honduras.