It is plate 400 and something, I can't find my book to see the exact number. It is a hard to find plate. It dates from the 1862 period. The hardware and plate is all from one rig minus the leather.
The item "Civil War Officers Belt Plate & all belt & matching Keeper + Belt Hardware" is in sale since Wednesday, March 07, 2018. This item is in the category "Collectibles\Militaria\Civil War (1861-65)\Original Period Items\Belts & Belt Buckles". The seller is "squattylobe5150" and is located in Toms River, New Jersey. 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, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia.