The slight curvature of the plate is original for the buckle. Some light wear on the high relief deign and on the belt slot at left. Beautiful showpiece for your collection!
Please see the photos; let me know if you have any questions! This buckle is described as authentic, as I believe it is authentic based on its condition and features in relation to other authentic Civil War buckles.
Be sure to examine all photos to determine condition; all items are genuine unless described otherwise. The item "MODEL 1851 CIVIL WAR RELIC U. OFFICER BELT BUCKLE NON-DUG ORIGINAL" is in sale since Thursday, July 29, 2021. This item is in the category "Collectibles\Militaria\Civil War (1861-65)\Original Period Items\Belts & Belt Buckles". The seller is "mfc_gold" and is located in Greenville, Ohio.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, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay.